Variable	Measurement	Era	SPSS code	N	Source
Access to safe water	% without access to safe water	1980	Water1_1980	38	Kurian 1992 table 19
		1995	Water1_1995	45	UN-HDR 1998 table 7
		1998	Water1_1998	43	UN-HDR 2000 table 4
Piped water	% dwellings with piped water	1990	Water2_1990	37	??
Improved water sources	% using improved water sources	2000	Water3_2000	64	UN-HDR 2002 table 6
Adequate sanitation facilities	% population using	1999	Sanitation_I999	61	UN-HDR 2001 table 6
Electricity	% homes with electricity	1984	Electricity_1984	32	Kurian 1992 table 185
Living space	Rooms per dwelling	1988	Rooms_1988	73	Kurian 1992 table 183

Related topics: Income, Poverty, Nutrition
Related themes: Consumption, Economy, Wealth

The dataset States of Nations is about characteristics of countries in periods (macro variables). It is part of the World Database of Happiness. Developed for the identification of societal conditions for happiness, the source can also be used for other purposes.