List of countries by sex ratio
The human sex ratio is the number of males for each female in a population. This is a list of sex ratios by country or region.
Methodology
The table actually represents The World Factbook,[1] except when otherwise indicated. It shows the male to female sex ratio as estimated by United States' CIA. However, there are differences between the estimates by The World Factbook and numbers reported by the census offices of respective countries. The world average for the ratio of males/females is 1.01, which means there are (more) 1.01 males for (fewer) 1.00 females.
For example, The World Factbook in 2001 reported Switzerland's sex ratio at birth as 1.05,[2] while Switzerland's Federal Office of Statistics in 2011 reported Switzerland's sex ratio at birth as 1.07 per its birth records census data.[3] Similar differences between estimates by "The World Factbook" and census numbers from birth records are known for Sweden, Norway, Ireland, India and Japan.
A ratio above 1, e.g. 1.1, means there are 1.1 males for every 1 female (more males than females). A ratio below 1, e.g. 0.8, means there are 0.8 males for every 1 female (more females than males). A ratio of 1 means there are equal numbers of females and males.[4]
Countries
Number of Males for each Female:
Country/region | at birth (CIA estimate)[1] | under 15 | 15–64 | over 65 | total | at birth (WDB estimate)[5] |
---|---|---|---|---|---|---|
World | 1.07 | 1.07 | 0.99 | 0.80 | 1.01 | 1.07 |
Afghanistan | 1.05 | 1.03 | 1.04 | 0.86 | 1.03 | 1.07 |
Albania | 1.118 | 1.1 | 1.05 | 0.87 | 1.04 | 1.07 |
Algeria | 1.05 | 1.04 | 1.02 | 0.86 | 1.01 | 1.05 |
American Samoa | 1.06 | 1.04 | 1.03 | 0.88 | 1.02 | |
Andorra | 1.066 | 1.06 | 1.09 | 0.99 | 1.07 | |
Angola | 1.05 | 1.02 | 1.03 | 0.79 | 1.02 | 1.03 |
Anguilla | 1.031 | 1.05 | 0.9 | 0.93 | 0.94 | |
Antigua and Barbuda | 1.05 | 1.03 | 0.87 | 0.76 | 0.9 | |
Argentina | 1.052 | 1.05 | 1 | 0.7 | 0.97 | 1.04 |
Armenia | 1.124 | 1.15 | 0.88 | 0.62 | 0.89 | 1.15 |
Aruba | 1.021 | 1.01 | 0.92 | 0.66 | 0.9 | 1.05 |
Australia | 1.055 | 1.05 | 1.03 | 0.84 | 1 | 1.06 |
Austria | 1.051 | 1.05 | 1.01 | 0.71 | 0.95 | 1.06 |
Azerbaijan | 1.13 | 1.16 | 0.97 | 0.58 | 0.97 | 1.16 |
Bahamas, The | 1.03 | 1.03 | 0.97 | 0.62 | 0.96 | 1.06 |
Bahrain | 1.028 | 1.02 | 1.33 | 1.13 | 1.24 | 1.05 |
Bangladesh | 1.0432 | 1.01 | 0.89 | 0.93 | 0.93 | 1.05 |
Barbados | 1.013 | 1 | 0.97 | 0.64 | 0.94 | 1.04 |
Belarus | 1.062 | 1.06 | 0.94 | 0.47 | 0.87 | 1.06 |
Belgium | 1.045 | 1.04 | 1.02 | 0.71 | 0.96 | 1.05 |
Belize | 1.05 | 1.04 | 1.02 | 0.91 | 1.03 | 1.03 |
Benin | 1.05 | 1.04 | 0.99 | 0.69 | 1 | 1.04 |
Bermuda | 1.015 | 1.00 | 0.97 | 0.71 | 0.94 | |
Bhutan | 1.05 | 1.04 | 1.13 | 1.12 | 1.1 | 1.04 |
Bolivia | 1.05 | 1.04 | 0.96 | 0.79 | 0.98 | 1.05 |
Bosnia and Herzegovina | 1.074 | 1.07 | 1.02 | 0.69 | 0.97 | 1.07 |
Botswana | 1.03 | 1.04 | 1.02 | 0.68 | 1.01 | 1.03 |
Brazil | 1.05 | 1.04 | 0.98 | 0.73 | 0.98 | 1.05 |
British Virgin Islands | 1.05 | 1.03 | 1.05 | 1.07 | 1.05 | |
Brunei | 1.047 | 1.06 | 0.99 | 0.94 | 1 | 1.06 |
Bulgaria | 1.06 | 1.05 | 0.97 | 0.68 | 0.92 | 1.06 |
Burkina Faso | 1.03 | 1.01 | 1 | 0.64 | 0.99 | 1.05 |
Burma | 1.06 | 1.04 | 0.99 | 0.77 | 0.99 | |
Burundi | 1.03 | 1.01 | 0.97 | 0.67 | 0.98 | 1.03 |
Cambodia | 1.045 | 1.02 | 0.95 | 0.6 | 0.96 | 1.05 |
Cameroon | 1.03 | 1.02 | 1.01 | 0.85 | 1.01 | 1.03 |
Canada | 1.056 | 1.05 | 1.02 | 0.78 | 0.98 | 1.05 |
Cape Verde | 1.03 | 1.01 | 0.94 | 0.61 | 0.94 | 1.03 |
Cayman Islands | 1.016 | 1.01 | 0.95 | 0.89 | 0.96 | |
Central African Republic | 1.03 | 1.01 | 0.98 | 0.67 | 0.98 | 1.03 |
Chad | 1.04 | 1.03 | 0.85 | 0.73 | 0.92 | 1.03 |
Chile | 1.05 | 1.05 | 1 | 0.72 | 0.98 | 1.04 |
China | 1.12 | 1.17 | 1.06 | 0.93 | 1.06 | 1.19 |
Colombia | 1.06 | 1.05 | 0.97 | 0.74 | 0.98 | 1.05 |
Comoros | 1.03 | 1.01 | 0.98 | 0.83 | 0.98 | 1.05 |
Congo, Democratic Republic of the | 1.03 | 1.01 | 0.99 | 0.69 | 0.99 | 1.03 |
Congo, Republic of the | 1.03 | 1.01 | 0.99 | 0.7 | 0.99 | 1.03 |
Cook Islands | 1.048 | 1.13 | 1.07 | 0.96 | 1.07 | |
Costa Rica | 1.05 | 1.05 | 1.01 | 0.86 | 1.01 | 1.05 |
Cote d'Ivoire | 1.03 | 1.02 | 1.04 | 0.99 | 1.03 | 1.02 |
Croatia | 1.055 | 1.06 | 0.99 | 0.64 | 0.93 | 1.06 |
Cuba | 1.06 | 1.06 | 1 | 0.83 | 0.99 | 1.06 |
Cyprus | 1.05 | 1.06 | 1.08 | 0.77 | 1.04 | 1.07 |
Czech Republic | 1.059 | 1.06 | 1.01 | 0.66 | 0.95 | 1.06 |
Denmark | 1.055 | 1.05 | 1.01 | 0.78 | 0.98 | 1.06 |
Djibouti | 1.03 | 1 | 0.8 | 0.81 | 0.86 | 1.04 |
Dominica | 1.05 | 1.04 | 1.05 | 0.76 | 1.02 | |
Dominican Republic | 1.04 | 1.04 | 1.04 | 0.86 | 1.03 | 1.05 |
Ecuador | 1.05 | 1.04 | 0.97 | 0.93 | 0.99 | 1.05 |
Egypt | 1.05 | 1.05 | 1.03 | 0.83 | 1.03 | 1.05 |
El Salvador | 1.05 | 1.05 | 0.89 | 0.81 | 0.93 | 1.05 |
Equatorial Guinea | 1.03 | 1.03 | 0.97 | 0.78 | 0.99 | 1.03 |
Eritrea | 1.03 | 1.01 | 0.96 | 0.82 | 0.98 | 1.03 |
Estonia | 1.063 | 1.06 | 0.91 | 0.49 | 0.84 | 1.06 |
Ethiopia | 1.03 | 1 | 0.96 | 0.75 | 0.97 | 1.03 |
European Union | 1.06 | 1.05 | 1 | 0.73 | 0.95 | 1.06 |
Faroe Islands | 1.071 | 1.07 | 1.15 | 0.9 | 1.09 | |
Fiji | 1.05 | 1.04 | 1 | 0.81 | 1 | 1.06 |
Finland | 1.04 | 1.04 | 1.02 | 0.69 | 0.96 | 1.05 |
France | 1.051 | 1.05 | 1 | 0.72 | 0.96 | 1.05 |
French Polynesia | 1.05 | 1.04 | 1.07 | 1.02 | 1.06 | 1.05 |
Gabon | 1.03 | 1.01 | 1 | 0.72 | 0.99 | 1.03 |
Gambia, The | 1.03 | 1.01 | 0.98 | 0.98 | 1 | 1.03 |
Gaza Strip / Palestine | 1.06 | 1.06 | 1.05 | 0.68 | 1.04 | 1.05 |
Georgia | 1.113 | 1.15 | 0.93 | 0.66 | 0.91 | 1.11 |
Germany | 1.055 | 1.05 | 1.04 | 0.72 | 0.97 | 1.06 |
Ghana | 1.03 | 1.02 | 1 | 0.84 | 1 | 1.06 |
Gibraltar | 1.07 | 1.06 | 1.02 | 0.93 | 1.01 | |
Greece | 1.064 | 1.06 | 1 | 0.78 | 0.96 | 1.07 |
Greenland | 1.051 | 1.03 | 1.15 | 1.05 | 1.12 | |
Grenada | 1.098 | 1.05 | 1.04 | 0.82 | 1.02 | 1.05 |
Guam | 1.06 | 1.07 | 1.04 | 0.85 | 1.03 | 1.06 |
Guatemala | 1.05 | 1.04 | 0.94 | 0.86 | 0.97 | 1.05 |
Guernsey | 1.05 | 1.03 | 0.98 | 0.77 | 0.95 | |
Guinea | 1.03 | 1.02 | 1 | 0.78 | 1 | 1.06 |
Guinea-Bissau | 1.03 | 1 | 0.93 | 0.66 | 0.95 | 1.03 |
Guyana | 1.05 | 1.04 | 1 | 0.71 | 1 | 1.05 |
Haiti | 1.011 | 1.02 | 0.99 | 0.62 | 0.98 | 1.05 |
Honduras | 1.05 | 1.04 | 1.01 | 0.81 | 1.01 | 1.05 |
Hong Kong | 1.075 | 1.09 | 0.94 | 0.88 | 0.95 | 1.07 |
Hungary | 1.057 | 1.06 | 0.98 | 0.57 | 0.91 | 1.06 |
Iceland | 1.04 | 1.03 | 1.02 | 0.83 | 1 | 1.05 |
India | 1.12 | 1.13 | 1.13 | 0.9 | 1.06 | 1.08 |
Indonesia | 1.05 | 1.03 | 1.01 | 0.8 | 1 | 1.05 |
Iran | 1.05 | 1.05 | 1.02 | 0.92 | 1.02 | 1.05 |
Iraq | 1.05 | 1.03 | 1.03 | 0.9 | 1.02 | 1.07 |
Ireland | 1.07 | 1.07 | 1 | 0.81 | 0.99 | 1.07 |
Isle of Man | 1.05 | 1.05 | 1.01 | 0.7 | 0.96 | |
Israel | 1.05 | 1.05 | 1.03 | 0.77 | 1 | 1.05 |
Italy | 1.07 | 1.06 | 1.03 | 0.72 | 0.96 | 1.06 |
Jamaica | 1.05 | 1.03 | 0.97 | 0.81 | 0.98 | 1.05 |
Japan | 1.06 | 1.06 | 1.02 | 0.74 | 0.95 | 1.06 |
Jersey | 1.08 | 1.08 | 1 | 0.8 | 0.97 | |
Jordan | 1.06 | 1.04 | 1.15 | 0.93 | 1.1 | 1.05 |
Kazakhstan | 1.06 | 1.04 | 0.95 | 0.54 | 0.92 | 1.07 |
Kenya | 1.02 | 1.01 | 1.01 | 0.84 | 1 | 1.03 |
Kiribati | 1.05 | 1.03 | 0.98 | 0.74 | 0.99 | 1.05 |
Korea, North | 1.06 | 1.03 | 0.98 | 0.63 | 0.95 | 1.05 |
Korea, South | 1.07 | 1.08 | 1.04 | 0.69 | 1 | 1.10 |
Kuwait | 1.04 | 1.04 | 1.78 | 1.66 | 1.54 | 1.03 |
Kyrgyzstan | 1.05 | 1.04 | 0.96 | 0.64 | 0.96 | 1.06 |
Laos | 1.04 | 1.01 | 0.98 | 0.76 | 0.98 | 1.05 |
Latvia | 1.05 | 1.05 | 0.95 | 0.49 | 0.86 | 1.05 |
Lebanon | 1.05 | 1.04 | 0.98 | 0.82 | 0.97 | 1.05 |
Lesotho | 1.03 | 1.01 | 0.96 | 0.66 | 0.96 | 1.03 |
Liberia | 1.03 | 1 | 0.98 | 0.94 | 0.99 | 1.06 |
Libya | 1.05 | 1.04 | 1.06 | 0.96 | 1.05 | 1.06 |
Liechtenstein | 1.26 | 1.09 | 0.99 | 0.76 | 0.94 | |
Lithuania | 1.06 | 1.05 | 0.96 | 0.53 | 0.89 | 1.05 |
Luxembourg | 1.07 | 1.06 | 1.02 | 0.7 | 0.97 | 1.06 |
Macau | 1.05 | 1.14 | 0.88 | 0.88 | 0.92 | 1.05 |
Macedonia | 1.08 | 1.08 | 1.02 | 0.77 | 1 | 1.08 |
Madagascar | 1.03 | 1.01 | 0.99 | 0.8 | 0.99 | 1.03 |
Malawi | 1.02 | 1 | 1.01 | 0.74 | 1 | 1.03 |
Malaysia | 1.07 | 1.06 | 1.03 | 0.89 | 1.03 | 1.06 |
Maldives | 1.05 | 1.04 | 1.04 | 1 | 1.05 | 1.06 |
Mali | 1.03 | 1.02 | 0.99 | 0.64 | 0.99 | 1.05 |
Malta | 1.06 | 1.06 | 1.03 | 0.76 | 0.99 | 1.06 |
Marshall Islands | 1.05 | 1.04 | 1.05 | 0.94 | 1.04 | |
Mauritania | 1.03 | 1.01 | 0.89 | 0.74 | 0.93 | 1.05 |
Mauritius | 1.05 | 1.03 | 0.99 | 0.67 | 0.97 | 1.04 |
Mayotte | 1.03 | 1.01 | 1.16 | 1.04 | 1.08 | 1.03 |
Mexico | 1.05 | 1.04 | 0.94 | 0.82 | 0.96 | 1.05 |
Micronesia, Federated States of | 1.05 | 1.03 | 0.99 | 0.74 | 1 | 1.07 |
Moldova | 1.06 | 1.06 | 0.94 | 0.58 | 0.91 | 1.06 |
Monaco | 1.06 | 1.05 | 0.98 | 0.68 | 0.91 | |
Mongolia | 1.05 | 1.04 | 1 | 0.77 | 1 | 1.03 |
Montenegro | 1.072 | 0.96 | 1.08 | 0.68 | 0.99 | 1.08 |
Montserrat | 1.03 | 1.08 | 0.92 | 1.95 | 1.01 | |
Morocco | 1.05 | 1.04 | 1 | 0.75 | 0.99 | 1.06 |
Mozambique | 1.02 | 1.01 | 0.96 | 0.71 | 0.97 | 1.03 |
Namibia | 1.03 | 1.02 | 1.02 | 0.81 | 1.01 | 1.03 |
Nauru | 1.05 | 1.04 | 0.97 | 1.04 | 1 | |
Nepal | 1.04 | 1.04 | 0.92 | 0.89 | 0.96 | 1.05 |
Netherlands | 1.05 | 1.05 | 1.02 | 0.76 | 0.98 | 1.06 |
Netherlands Antilles | 1.05 | 1.05 | 0.93 | 0.68 | 0.93 | |
New Caledonia | 1.05 | 1.04 | 1.01 | 0.86 | 1.01 | 1.05 |
New Zealand | 1.05 | 1.05 | 1 | 0.84 | 0.99 | 1.06 |
Nicaragua | 1.05 | 1.04 | 1 | 0.78 | 1 | 1.05 |
Niger | 1.03 | 1.02 | 0.99 | 0.81 | 1 | 1.05 |
Nigeria | 1.06 | 1.05 | 1.04 | 0.94 | 1.04 | 1.06 |
Northern Mariana Islands | 1.06 | 1.1 | 0.85 | 1.08 | 0.74 | |
Norway | 1.05 | 1.05 | 1.03 | 0.75 | 0.98 | 1.06 |
Oman | 1.05 | 1.04 | 1.38 | 1.32 | 1.22 | 1.05 |
Pakistan | 1.05 | 1.06 | 1.05 | 0.88 | 1.09 | 1.05 |
Palau | 1.06 | 1.06 | 1.26 | 0.45 | 1.14 | |
Panama | 1.04 | 1.04 | 1.02 | 0.87 | 1.02 | 1.05 |
Papua New Guinea | 1.05 | 1.03 | 1.06 | 0.86 | 1.04 | 1.08 |
Paraguay | 1.05 | 1.03 | 1.01 | 0.86 | 1.01 | 1.05 |
Peru | 1.05 | 1.04 | 1.01 | 0.89 | 1.01 | 1.05 |
Philippines | 1.05 | 1.04 | 1 | 0.76 | 1 | 1.06 |
Poland | 1.06 | 1.06 | 0.99 | 0.62 | 0.94 | 1.06 |
Portugal | 1.07 | 1.09 | 0.99 | 0.7 | 0.95 | 1.06 |
Puerto Rico | 1.02 | 1.05 | 0.93 | 0.76 | 0.92 | 1.05 |
Qatar | 1.06 | 1.06 | 2.46 | 1.38 | 2 | 1.04 |
Romania | 1.06 | 1.05 | 0.99 | 0.69 | 0.95 | 1.06 |
Russia | 1.06 | 1.05 | 0.92 | 0.44 | 0.86 | 1.06 |
Rwanda | 1.03 | 1.01 | 1 | 0.66 | 0.99 | 1.01 |
Saint Barthelemy | 1.05 | 1.06 | 1.19 | 0.99 | 1.14 | |
Saint Helena | 1.05 | 1.04 | 1.04 | 0.9 | 1.03 | |
Saint Kitts and Nevis | 1.06 | 1.05 | 1 | 0.72 | 0.99 | |
Saint Lucia | 1.06 | 1.05 | 0.94 | 0.82 | 0.96 | 1.03 |
Saint Martin | 1.04 | 0.99 | 0.91 | 0.81 | 0.92 | |
Saint Pierre and Miquelon | 1.05 | 1.04 | 1.03 | 0.86 | 1.01 | |
Saint Vincent and the Grenadines | 1.03 | 1.02 | 1.06 | 0.82 | 1.03 | 1.03 |
Samoa | 1.05 | 1.04 | 1.1 | 0.8 | 1.06 | 1.08 |
San Marino | 1.09 | 1.08 | 0.92 | 0.76 | 0.91 | |
Sao Tome and Principe | 1.03 | 1.03 | 0.94 | 0.82 | 0.98 | 1.03 |
Saudi Arabia | 1.05 | 1.04 | 1.29 | 1.06 | 1.18 | 1.03 |
Senegal | 1.03 | 1.01 | 0.98 | 0.88 | 0.99 | 1.03 |
Serbia | 1.07 | 1.07 | 1 | 0.7 | 0.95 | 1.08 |
Seychelles | 1.03 | 1.05 | 1.08 | 0.59 | 1.03 | |
Sierra Leone | 1.03 | 0.96 | 0.92 | 0.84 | 0.94 | 1.02 |
Singapore | 1.08 | 1.08 | 0.95 | 0.8 | 0.95 | 1.07 |
Slovakia | 1.05 | 1.05 | 0.99 | 0.6 | 0.94 | 1.05 |
Slovenia | 1.07 | 1.06 | 1.02 | 0.64 | 0.95 | 1.05 |
Solomon Islands | 1.05 | 1.04 | 1.02 | 0.9 | 1.02 | 1.09 |
Somalia | 1.03 | 1 | 1 | 0.72 | 1 | 1.03 |
South Africa | 1.02 | 1 | 1.02 | 0.69 | 0.99 | 1.03 |
Spain | 1.07 | 1.06 | 1.01 | 0.72 | 0.96 | 1.06 |
Sri Lanka | 1.04 | 1.04 | 0.96 | 0.87 | 0.97 | 1.04 |
Sudan | 1.05 | 1.04 | 1.01 | 1.07 | 1.03 | 1.05 |
Suriname | 1.07 | 1.04 | 0.99 | 0.76 | 0.99 | 1.08 |
Swaziland | 1.03 | 1.02 | 0.93 | 0.59 | 0.95 | 1.03 |
Sweden | 1.06 | 1.06 | 1.03 | 0.79 | 0.98 | 1.06 |
Switzerland | 1.05 | 1.08 | 1.02 | 0.71 | 0.97 | 1.06 |
Syria | 1.06 | 1.06 | 1.05 | 0.89 | 1.05 | 1.05 |
Taiwan | 1.09 | 1.08 | 1.02 | 0.94 | 1.02 | |
Tajikistan | 1.05 | 1.04 | 0.98 | 0.74 | 0.99 | 1.05 |
Tanzania | 1.03 | 1 | 0.97 | 0.78 | 0.98 | 1.03 |
Thailand | 1.05 | 1.05 | 0.98 | 0.83 | 0.98 | 1.06 |
Timor-Leste | 1.05 | 1.03 | 1.04 | 0.91 | 1.03 | 1.05 |
Togo | 1.03 | 1.01 | 0.96 | 0.65 | 0.97 | 1.02 |
Tonga | 1.05 | 1.04 | 0.99 | 0.71 | 0.99 | 1.05 |
Trinidad and Tobago | 1.03 | 1.05 | 1.05 | 0.75 | 1.02 | 1.04 |
Tunisia | 1.07 | 1.07 | 1.01 | 0.87 | 1.01 | 1.05 |
Turkey | 1.05 | 1.05 | 1.02 | 0.84 | 1.02 | 1.05 |
Turkmenistan | 1.05 | 1.02 | 0.98 | 0.77 | 0.98 | 1.05 |
Turks and Caicos Islands | 1.05 | 1.04 | 1.1 | 0.95 | 1.07 | |
Tuvalu | 1.05 | 1.04 | 0.96 | 0.59 | 0.96 | |
Uganda | 1.03 | 1.01 | 1.01 | 0.71 | 1 | 1.03 |
Ukraine | 1.06 | 1.06 | 0.92 | 0.5 | 0.85 | 1.06 |
United Arab Emirates | 1.05 | 1.05 | 2.74 | 1.82 | 2.19 | 1.05 |
United Kingdom | 1.05 | 1.05 | 1.03 | 0.76 | 0.98 | 1.05 |
United States | 1.05 | 1.04 | 1.07 | 0.75 | 0.97 | 1.05 |
United States Virgin Islands | 1.06 | 1.03 | 0.88 | 0.82 | 0.9 | 1.06 |
Uruguay | 1.04 | 1.03 | 0.99 | 0.67 | 0.95 | 1.05 |
Uzbekistan | 1.06 | 1.05 | 0.99 | 0.75 | 0.99 | 1.05 |
Vanuatu | 1.05 | 1.04 | 1.04 | 1.06 | 1.04 | 1.07 |
Venezuela | 1.05 | 1.03 | 0.97 | 0.8 | 0.98 | 1.05 |
Vietnam | 1.12 | 1.1 | 0.99 | 0.63 | 0.98 | 1.05 |
Wallis and Futuna | 1.05 | 1.11 | 1 | 0.83 | 1.01 | |
West Bank / Palestine | 1.06 | 1.05 | 1.05 | 0.71 | 1.04 | 1.05 |
Western Sahara | 1.04 | 1.03 | 0.97 | 0.73 | 0.99 | |
Yemen | 1.05 | 1.04 | 1.03 | 0.92 | 1.03 | 1.05 |
Zambia | 1.03 | 1.01 | 1 | 0.7 | 1 | 1.03 |
Zimbabwe | 1.03 | 1.02 | 0.81 | 0.78 | 0.91 | 1.02 |
See also
References
- 1 2 "Sex Ratio", The World Factbook, Central Intelligence Agency, accessed various dates.
- ↑ "Europe-Switzerland-People-Sex Ratio-at birth". 2001.
- ↑ "Statistical Data on Switzerland 2011, see page 6 for sex ratio at birth". Switzerland Federal Statistics Office.
- ↑ "The World Factbook 2010 (CIA’s 2009 Edition)".
- ↑ "Gender Statistics Highlights from 2012 World Development Report". World DataBank, a compilation of databases by the World Bank. February 2012.