Sources

Home page slide show:

The statistics in the slide show on the Global AgeWatch home page are calculated based on:

Population Division of the Department of Economic and Social Affairs of the United Nations Secretariat, World Population Ageing and Development 2012: Wall Chart (New York, 2012; forthcoming) http://www.unpopulation.org.

Population Division of the Department of Economic and Social Affairs of the United Nations Secretariat, World Population Ageing: Profiles of Ageing 2011 (New York, 2011), CD-ROM.

Population Division of the Department of Economic and Social Affairs of the United Nations Secretariat, World Population Prospects: The 2010 Revision (New York, 2011)
http://esa.un.org/unpd/wpp/index.htm.

Proportion aged 60+ and 80+, life expectancy at birth and at age 60:

Population Division of the Department of Economic and Social Affairs of the United Nations Secretariat, Prepared by the Population and Development Section, on the basis of data from United Nations, World Population Prospects: The 2010 Revision (New York, 2011), and United Nations, World Population Ageing and Development 2012: Wall Chart (New York, 2012; forthcoming)
http://www.unpopulation.org.

Healthy life expectancy at birth:

World Health Organization, Global Disease Burden: The 2004 Update (Geneva, 2008) http://www.who.int/gho/publications/world_health_statistics/EN_WHS08_Part2.pdf

Number of people aged 100 or over:

United Nations DESA, Population Division, World Population Ageing: Profiles of Ageing 2011 (New York, 2011), CD-ROM.

Policies and ageing:

HelpAge International / UNFPA internal database

Social pensions:

PensionWatch 
http://www.pension-watch.net/pensions/contact-us/social-pensions-database-notes/