Year	Millions of Persons
1960-01-01	3.37
1961-01-01	3.39
1962-01-01	3.37
1963-01-01	3.35
1964-01-01	3.34
1965-01-01	3.32
1966-01-01	3.29
1967-01-01	3.24
1968-01-01	3.20
1969-01-01	3.19
1970-01-01	3.20
1971-01-01	3.23
1972-01-01	3.26
1973-01-01	3.30
1974-01-01	3.34
1975-01-01	3.32
1976-01-01	3.33
1977-01-01	3.37
1978-01-01	3.39
1979-01-01	3.40
1980-01-01	3.43
1981-01-01	3.42
1982-01-01	3.37
1983-01-01	3.35
1984-01-01	3.35
1985-01-01	3.36
1986-01-01	3.37
1987-01-01	3.37
1988-01-01	3.39
1989-01-01	3.44
1990-01-01	3.50
1991-01-01	3.55
1992-01-01	3.57
1993-01-01	3.55
1994-01-01	3.55
1995-01-01	3.54
1996-01-01	3.56
1997-01-01	3.59
1998-01-01	3.63
1999-01-01	3.69
2000-01-01	3.74
2001-01-01	3.76
2002-01-01	3.76
2003-01-01	3.78
2004-01-01	3.81
2005-01-01	3.85
2006-01-01	3.92
2007-01-01	3.99
2008-01-01	4.07
2009-01-01	4.03
2010-01-01	4.07
2011-01-01	4.13