a private, nonprofit organization which informs people around the world about population, health and the environment for research or academic purposes. It was founded in 1929. World Population Data Sheets are double-sided wallcharts (now published online) that present detailed information on demographic, health and environment indicators for more than 200 countries. Note: Changes in figures of fertility rates by country from one year to another do not always reflect an actual increase or decrease of fertility rates in a certain country but instead reflect a change made due to more accurate and updated information from sources. The Our World In Data (OWID) Country ranking 2019 list is sourced and based on the OWID website (on the clickable map and quoted sources). (OWID) is an online publication that presents empirical research and data that show how living conditions around the world are changing. The aim is to show how the world is changing and why. The publication is developed at the University of Oxford and authored by social historian and development economist Max Roser. Comparison ranking lists: The Our World In Data (OWID) Country ranking and comparison by TFR: 1950 and 2015 list is sourced and based on the OWID website (on the clickable map and quoted sources). Our World In Data (OWID) is an online publication that presents empirical research and data that show how living conditions around the world are changing. The aim is to show how the world is changing and why. The publication is developed at the University of Oxford and authored by social historian and development economist Max Roser. The World Bank Country ranking and comparison by TFR: 1960 and 2015 list is sourced and based on the online published demographic data of the World Bank website (on the clickable map and quoted sources). The Population Reference Bureau (PRB) Country ranking and comparison by TFR: 1970 and 2013 list is sourced and based on the data of the 2014 World Population Data Sheet published online. Forecast/prediction ranking lists: The UN ranking list is sourced from the United Nations World Population Prospects. Figures are from the 2015 revision of the United Nations World Population Prospects report, for the period 2015–2020, using the medium assumption. and from the 2019 revision United Nations World Population Prospects report, for the period 2020–2025, using the medium assumption. The United Nations Population Division (part of the DESA - Department of Economic and