| Year | Value | | 2022 | 234,410 | | 2021 | 227,726 | | 2020 | 221,392 | | 2019 | 214,863 | | 2018 | 209,312 | | 2017 | 203,720 | | 2016 | 195,799 | | 2015 | 183,459 | | 2014 | 166,001 | | 2013 | 146,729 | | 2012 | 131,569 | | 2011 | 124,747 | | 2010 | 127,730 | | 2009 | 138,679 | | 2008 | 154,099 | | 2007 | 169,989 | | 2006 | 182,320 | | 2005 | 189,060 | | 2004 | 190,537 | | 2003 | 188,713 | | 2002 | 186,482 | | 2001 | 186,129 | | 2000 | 189,601 | | 1999 | 197,548 | | 1998 | 206,796 | | 1997 | 213,091 | | 1996 | 213,908 | | 1995 | 208,838 | | 1994 | 199,106 | | 1993 | 186,136 | | 1992 | 171,534 | | 1991 | 157,296 | | 1990 | 144,273 | | 1989 | 131,608 | | 1988 | 118,958 | | 1987 | 107,122 | | 1986 | 97,482 | | 1985 | 91,971 | | 1984 | 91,080 | | 1983 | 94,501 | | 1982 | 101,187 | | 1981 | 109,231 | | 1980 | 116,540 | | 1979 | 121,852 | | 1978 | 124,760 | | 1977 | 125,700 | | 1976 | 125,677 | | 1975 | 125,226 | | 1974 | 124,183 | | 1973 | 122,235 | | 1972 | 119,597 | | 1971 | 116,302 | | 1970 | 112,116 | | 1969 | 107,297 | | 1968 | 102,224 | | 1967 | 97,188 | | 1966 | 92,606 | | 1965 | 89,135 | | 1964 | 86,767 | | 1963 | 85,321 | | 1962 | 84,694 | | 1961 | 84,368 | | 1960 | 83,997 |
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