| Year | Value | | 2022 | 458,960 | | 2021 | 452,292 | | 2020 | 446,246 | | 2019 | 439,620 | | 2018 | 431,287 | | 2017 | 420,758 | | 2016 | 408,885 | | 2015 | 398,274 | | 2014 | 390,339 | | 2013 | 385,048 | | 2012 | 382,222 | | 2011 | 380,403 | | 2010 | 378,996 | | 2009 | 377,266 | | 2008 | 374,076 | | 2007 | 369,493 | | 2006 | 363,286 | | 2005 | 355,409 | | 2004 | 345,671 | | 2003 | 334,379 | | 2002 | 322,263 | | 2001 | 309,693 | | 2000 | 296,514 | | 1999 | 282,578 | | 1998 | 268,268 | | 1997 | 253,912 | | 1996 | 239,741 | | 1995 | 226,521 | | 1994 | 214,857 | | 1993 | 203,913 | | 1992 | 194,389 | | 1991 | 187,471 | | 1990 | 182,352 | | 1989 | 178,371 | | 1988 | 175,708 | | 1987 | 173,124 | | 1986 | 169,290 | | 1985 | 164,769 | | 1984 | 160,256 | | 1983 | 155,274 | | 1982 | 149,640 | | 1981 | 144,455 | | 1980 | 140,113 | | 1979 | 136,490 | | 1978 | 133,796 | | 1977 | 131,763 | | 1976 | 129,439 | | 1975 | 126,872 | | 1974 | 124,298 | | 1973 | 121,297 | | 1972 | 117,894 | | 1971 | 114,553 | | 1970 | 111,537 | | 1969 | 108,772 | | 1968 | 106,211 | | 1967 | 103,931 | | 1966 | 101,842 | | 1965 | 100,289 | | 1964 | 99,416 | | 1963 | 98,745 | | 1962 | 98,174 | | 1961 | 97,854 | | 1960 | 97,842 |
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