| Year | Value | | 2022 | 948,368 | | 2021 | 919,432 | | 2020 | 890,915 | | 2019 | 862,607 | | 2018 | 834,660 | | 2017 | 807,291 | | 2016 | 780,290 | | 2015 | 753,546 | | 2014 | 727,221 | | 2013 | 701,342 | | 2012 | 676,093 | | 2011 | 651,781 | | 2010 | 628,628 | | 2009 | 606,541 | | 2008 | 585,325 | | 2007 | 564,766 | | 2006 | 545,061 | | 2005 | 526,457 | | 2004 | 508,792 | | 2003 | 491,883 | | 2002 | 475,752 | | 2001 | 460,478 | | 2000 | 446,097 | | 1999 | 432,702 | | 1998 | 420,203 | | 1997 | 408,180 | | 1996 | 396,269 | | 1995 | 384,000 | | 1994 | 370,492 | | 1993 | 355,442 | | 1992 | 340,330 | | 1991 | 321,910 | | 1990 | 300,146 | | 1989 | 280,879 | | 1988 | 262,563 | | 1987 | 245,220 | | 1986 | 228,841 | | 1985 | 213,357 | | 1984 | 198,741 | | 1983 | 184,895 | | 1982 | 171,838 | | 1981 | 159,553 | | 1980 | 148,033 | | 1979 | 137,782 | | 1978 | 130,723 | | 1977 | 121,597 | | 1976 | 112,990 | | 1975 | 105,212 | | 1974 | 98,419 | | 1973 | 94,208 | | 1972 | 92,104 | | 1971 | 90,917 | | 1970 | 89,530 | | 1969 | 88,017 | | 1968 | 86,442 | | 1967 | 84,046 | | 1966 | 82,721 | | 1965 | 82,885 | | 1964 | 83,831 | | 1963 | 83,680 | | 1962 | 82,036 | | 1961 | 80,160 | | 1960 | 78,599 |
|