International Data in DataFinder
The international data in PRB's DataFinder are from several Population Reference Bureau data sheets: 2014 World Population Data Sheet, 2013 World Population Data Sheet, 2012 World Population Data Sheet, World's Youth 2013 Data Sheet; Family Planning Worldwide 2013 Data Sheet; Population and Economic Development 2012 Data Sheet; and Women and Girls of Our World 2011 Data Sheet. Data sources and definitions of terms used in the 2014 world Population Data sheet are listed below. For data sources and definitions for data from other PRB data sheets, access the data sheets on PRB's website, www.prb.org.
Additional international indicators in DataFinder were compiled by PRB staff, primarily using national surveys. Sources for each indicator appear as footnotes for that indicator. More detailed sources are available from PRB.
Notes for the 2014 World Population Data Sheet
The Data Sheet lists all geopolitical entities with populations of 150,000 or more and all members of the UN. These include sovereign states, dependencies, overseas departments, and some territories whose status or boundaries may be undetermined or in dispute. More developed regions, following the UN classification, comprise all of Europe and North America, plus Australia, Japan, and New Zealand. All other regions and countries are classified as less developed. The least developed countries consist of 48 countries with especially low incomes, high economic vulnerability, and poor human development indicators; 34 of these are in sub-Saharan Africa, 13 in Asia, and one in the Caribbean. The criteria and list of countries, as defined by the United Nations, can be found at www.unohrlls.org/about-ldc/.
Sub-Saharan Africa: All countries of Africa except the northern African countries of Algeria, Egypt, Libya, Morocco, Tunisia, and Western Sahara. World and Regional Totals: Regional population totals are independently rounded and include small countries or areas not shown. Regional and world rates and percentages are weighted averages of countries for which data are available; regional averages are shown when data or estimates are available for at least three-quarters of the region’s population.
World Population Data Sheets from different years should not be used as a time series. Fluctuations in values from year to year often reflect revisions based on new data or estimates rather than actual changes in levels. Additional information on likely trends and consistent time series can be obtained from PRB, and are also available from UN and U.S. Census Bureau publications and websites.
Sources for the 2014 World Population Data Sheet
The rates and figures, including those from 1970, are primarily compiled from the following sources: official country statistical yearbooks, bulletins, and websites; the United Nations Demographic Yearbook, 2012, and Population and Vital Statistics Report of the UN Statistics Division; World Population Prospects: The 2012 Revision of the UN Population Division; and the International Data Base of the International Programs Center, U.S. Census Bureau. Other sources include recent demographic surveys such as the Demographic and Health Surveys, Reproductive Health Surveys, special studies, and direct communication with demographers and statistical bureaus in the United States and abroad. Specific data sources may be obtained by contacting the authors of the 2014 World Population Data Sheet. For countries with complete registration of births and deaths, rates are those most recently reported. For more developed countries, nearly all vital rates refer to 2013 or 2012.
Definitions for Indicators From Various World Population Data Sheets
Birth and Death Rate: The annual number of births and deaths per 1,000 total population. These rates are often referred to as "crude rates" since they do not take a population’s age structure into account. Thus, crude death rates in more developed countries, with a relatively large proportion of high-mortality older population, are often higher than those in less developed countries with lower life expectancy.
Carbon Emissions, 1990 & 2012: Fossil fuel and cement production emissions by country. The world emissions include bunker fuels, or emissions from fuels used for international aviation and maritime transport. All values are in million tons per year. The 1990 emissions are based on UN reporting and U.S. Geological Service. The 2012 emissions are preliminary and based on BP statistics and U.S. Geological Survey cement data. Data are from T.A. Boden, G. Marland, and R.J. Andres, “Global, Regional, and National Fossil-Fuel CO2 Emissions” (2013), U.S. Dept. of Energy, Oak Ridge National Laboratory, Carbon Dioxide Information Analysis Center, accessed at http://cdiac.ornl.gov/trends/emis/overview_2010.html.
Contraceptive Use: The percentage of currently married or "in union" women of reproductive age who are currently using any form of contraception. "Modern" methods include clinic and supply methods such as the pill, IUD, condom, and sterilization. Data are from the most recently available national-level surveys, such as Demographic and Health Surveys, Reproductive Health Surveys, Multiple Indicator Cluster Surveys, regional survey programs, national surveys, and the UN Population Division World Contraceptive Use 2014. For more developed countries, data refer to some point in the 1990s and early 2000s. Data for less developed countries are primarily from a point in the mid-2000s to a very recent year. Data prior to 2008 are shown in italics.
Deaths Due to Noncomunicable Diseases: The estimated percentage of all deaths that occurred in 2008 that resulted from NCDs. Data are from WHO's Noncommunicable Diseases Country Profiles 2011. Regional averages were calculated by PRB.
GNI PPP per Capita, 2013 (US$):
GNI PPP per capita is gross national income in purchasing power parity (PPP) divided by mid-year population. GNI PPP refers to gross national income converted to “international” dollars using a purchasing power parity conversion factor. International dollars indicate the amount of goods and services one could buy in the United States with a given amount of money. Data are from the World Bank. Figures in italics are for 2009-2012.
Infant Mortality Rate, 1970 & 2013 (or most recent year for which data are available): The annual number of deaths of infants under age 1 per 1,000 live births. Rates shown with decimals indicate national statistics reported as completely registered, while those without are estimates from the sources cited above. Rates shown in italics are based upon fewer than 50 annual infant deaths and, as a result, are subject to considerable yearly variability; rates shown for such countries are averages for a multiple-year period.
Life Expectancy at Birth, 1970 & 2013 (or most recent year for which data are available):
The average number of years a newborn infant can expect to live under current mortality levels.
Net Migration Rate: The estimated rate of net immigration (immigration minus emigration) per 1,000 population for a recent year based upon the official national rate or derived as a residual from estimated birth, death, and population growth rates. Migration rates can vary substantially from year to year for any particular country.
Population Age <15/Age 65+: The percentage of the total population in these ages, which are often considered the "dependent ages."
Mid-2014 Population: Estimates are based on a recent census, official national data, or PRB, UN, and U.S. Census Bureau projections. The effects of refugee movements, large numbers of foreign workers, and population shifts due to contemporary political events are taken into account to the extent possible.
Population Using Improved Sanitation: For monitoring Millennium Development Goals, an improved sanitation facility is defined as one that hygienically separates sewage from human contact. Data are from WHO/UNICEF Joint Monitoring Programme for Water Supply and Sanitation (www.wssinfo.org/datamining/tables.html).
Projected Population, 2030-2050: Projected populations based upon reasonable assumptions on the future course of fertility, mortality, and migration. Projections are based upon official country projections, series issued by the UN or the U.S. Census Bureau, or PRB projections.
Rate of Natural Increase: The birth rate minus the death rate, implying the annual rate of population growth without regard for migration. Expressed as a percentage.
Total Fertility Rate: The average number of children a woman would have assuming that current age-specific birth rates remain constant throughout her childbearing years (usually considered to be ages 15 to 49).
Prevalence of HIV/AIDS: The estimated percentage of adults, by sex, ages 15-49, living with HIV/AIDS. Figures are from UNAIDS 2010 Report on the Global AIDS Epidemic with updates from recent Demographic and Health Surveys.
Urban Population: Percentage of the total population living in areas termed "urban" by that country. Typically, the population living in towns of 2,000 or more or in national and provincial capitals is classified "urban."