| year | population |
|---|---|
| 1960 | 2755600.0 |
| 1961 | 2801500.0 |
| 1962 | 2845600.0 |
| 1963 | 2881100.0 |
| 1964 | 2916800.0 |
| 1965 | 2953600.0 |
| 1966 | 2989300.0 |
| 1967 | 3026800.0 |
| 1968 | 3062000.0 |
| 1969 | 3095700.0 |
| 1970 | 3118941.0 |
| 1971 | 3160437.0 |
| 1972 | 3197645.0 |
| 1973 | 3229598.0 |
| 1974 | 3259277.0 |
| 1975 | 3288510.0 |
| 1976 | 3314794.0 |
| 1977 | 3342533.0 |
| 1978 | 3367538.0 |
| 1979 | 3391490.0 |
| 1980 | 3404194.0 |
| 1981 | 3422210.0 |
| 1982 | 3443684.0 |
| 1983 | 3470673.0 |
| 1984 | 3499711.0 |
| 1985 | 3528698.0 |
| 1986 | 3560388.0 |
| 1987 | 3597439.0 |
| 1988 | 3635295.0 |
| 1989 | 3674802.0 |
| 1990 | 3693708.0 |
| 1991 | 3701968.0 |
| 1992 | 3706299.0 |
| 1993 | 3693929.0 |
| 1994 | 3671296.0 |
| 1995 | 3642991.0 |
| 1996 | 3615212.0 |
| 1997 | 3588013.0 |
| 1998 | 3562261.0 |
| 1999 | 3536401.0 |
| 2000 | 3512074.0 |
| 2001 | 3486998.0 |
| 2002 | 3475586.0 |
| 2003 | 3462553.0 |
| 2004 | 3445857.0 |
| 2005 | 3425324.0 |
| 2006 | 3403284.0 |
| 2007 | 3384879.0 |
| 2008 | 3366357.0 |
| 2009 | 3349872.0 |
| 2010 | 3329039.0 |
| 2011 | 3052588.0 |
| 2012 | 3007758.0 |