Polity IV index (own calculation of global population share); Literacy:
OECD for the period 1820 to 1990. UNESCO for 2004 and later; Education:
OECD for the period 1820 to 1960. IIASA for the time thereafter; Mortality:
up to 1960 own calculations based on Gapminder; World Bank thereafter; Poverty:
Bourguignon & Morrison (2002) up to 1970 - World Bank 1981 and later (2015 is a projection); Vaccination:
WHO (Global data are available for 1980 to 2015 - the DPT3 vaccination was licensed in 1949).