Year	Millions of Persons
1960-01-01	3.50
1961-01-01	3.53
1962-01-01	3.58
1963-01-01	3.61
1964-01-01	3.66
1965-01-01	3.67
1966-01-01	3.69
1967-01-01	3.67
1968-01-01	3.67
1969-01-01	3.73
1970-01-01	3.73
1971-01-01	3.76
1972-01-01	3.75
1973-01-01	3.78
1974-01-01	3.84
1975-01-01	3.78
1976-01-01	3.76
1977-01-01	3.75
1978-01-01	3.75
1979-01-01	3.79
1980-01-01	3.78
1981-01-01	3.71
1982-01-01	3.66
1983-01-01	3.61
1984-01-01	3.61
1985-01-01	3.63
1986-01-01	3.65
1987-01-01	3.68
1988-01-01	3.75
1989-01-01	3.81
1990-01-01	3.85
1991-01-01	3.86
1992-01-01	3.86
1993-01-01	3.83
1994-01-01	3.82
1995-01-01	3.87
1996-01-01	3.88
1997-01-01	3.91
1998-01-01	3.98
1999-01-01	4.03
2000-01-01	4.11
2001-01-01	4.17
2002-01-01	4.16
2003-01-01	4.16
2004-01-01	4.20
2005-01-01	4.26
2006-01-01	4.31
2007-01-01	4.38
2008-01-01	4.46
2009-01-01	4.45
2010-01-01	4.49
2011-01-01	4.55