Year	Millions of Persons
1960-01-01	25.01
1961-01-01	25.77
1962-01-01	26.51
1963-01-01	27.26
1964-01-01	27.98
1965-01-01	28.70
1966-01-01	29.44
1967-01-01	30.13
1968-01-01	30.84
1969-01-01	31.54
1970-01-01	32.24
1971-01-01	32.88
1972-01-01	33.51
1973-01-01	34.10
1974-01-01	34.69
1975-01-01	35.28
1976-01-01	35.85
1977-01-01	36.41
1978-01-01	36.97
1979-01-01	37.53
1980-01-01	38.12
1981-01-01	38.72
1982-01-01	39.33
1983-01-01	39.91
1984-01-01	40.41
1985-01-01	40.81
1986-01-01	41.21
1987-01-01	41.62
1988-01-01	42.03
1989-01-01	42.45
1990-01-01	42.87
1991-01-01	43.30
1992-01-01	43.75
1993-01-01	44.19
1994-01-01	44.64
1995-01-01	45.09
1996-01-01	45.52
1997-01-01	45.95
1998-01-01	46.29
1999-01-01	46.62
2000-01-01	47.01
2001-01-01	47.36
2002-01-01	47.62
2003-01-01	47.86
2004-01-01	48.04
2005-01-01	48.14
2006-01-01	48.37
2007-01-01	48.60
2008-01-01	48.95
2009-01-01	49.18
2010-01-01	49.41
2011-01-01	49.78