| Year | Value | | 2022 | 517,032 | | 2021 | 503,754 | | 2020 | 490,029 | | 2019 | 475,102 | | 2018 | 459,348 | | 2017 | 443,422 | | 2016 | 427,430 | | 2015 | 411,375 | | 2014 | 395,227 | | 2013 | 378,970 | | 2012 | 362,653 | | 2011 | 346,451 | | 2010 | 330,645 | | 2009 | 315,414 | | 2008 | 300,800 | | 2007 | 286,780 | | 2006 | 273,452 | | 2005 | 261,171 | | 2004 | 248,904 | | 2003 | 237,547 | | 2002 | 229,119 | | 2001 | 222,873 | | 2000 | 217,885 | | 1999 | 215,041 | | 1998 | 213,343 | | 1997 | 210,639 | | 1996 | 207,620 | | 1995 | 204,987 | | 1994 | 202,821 | | 1993 | 201,072 | | 1992 | 199,386 | | 1991 | 197,003 | | 1990 | 193,424 | | 1989 | 188,627 | | 1988 | 182,573 | | 1987 | 175,419 | | 1986 | 167,577 | | 1985 | 159,410 | | 1984 | 151,087 | | 1983 | 142,795 | | 1982 | 134,669 | | 1981 | 126,671 | | 1980 | 118,836 | | 1979 | 111,318 | | 1978 | 104,186 | | 1977 | 97,521 | | 1976 | 91,634 | | 1975 | 86,620 | | 1974 | 82,284 | | 1973 | 78,567 | | 1972 | 75,444 | | 1971 | 72,861 | | 1970 | 70,840 | | 1969 | 70,416 | | 1968 | 71,764 | | 1967 | 73,524 | | 1966 | 74,997 | | 1965 | 75,851 | | 1964 | 76,026 | | 1963 | 75,672 | | 1962 | 75,077 | | 1961 | 74,535 | | 1960 | 75,282 |
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