| Year | Value | | 2022 | 193,454 | | 2021 | 191,382 | | 2020 | 184,899 | | 2019 | 178,651 | | 2018 | 175,603 | | 2017 | 171,644 | | 2016 | 173,217 | | 2015 | 185,942 | | 2014 | 198,893 | | 2013 | 200,323 | | 2012 | 193,910 | | 2011 | 182,447 | | 2010 | 165,039 | | 2009 | 145,929 | | 2008 | 134,802 | | 2007 | 133,173 | | 2006 | 133,854 | | 2005 | 135,807 | | 2004 | 138,393 | | 2003 | 140,404 | | 2002 | 141,385 | | 2001 | 140,315 | | 2000 | 137,394 | | 1999 | 133,731 | | 1998 | 129,886 | | 1997 | 126,967 | | 1996 | 125,319 | | 1995 | 123,708 | | 1994 | 120,340 | | 1993 | 112,892 | | 1992 | 101,925 | | 1991 | 90,283 | | 1990 | 81,022 | | 1989 | 79,030 | | 1988 | 85,736 | | 1987 | 97,137 | | 1986 | 109,142 | | 1985 | 119,084 | | 1984 | 124,351 | | 1983 | 126,090 | | 1982 | 126,766 | | 1981 | 127,186 | | 1980 | 127,838 | | 1979 | 128,367 | | 1978 | 128,876 | | 1977 | 129,545 | | 1976 | 130,010 | | 1975 | 129,267 | | 1974 | 127,498 | | 1973 | 125,297 | | 1972 | 122,065 | | 1971 | 118,000 | | 1970 | 114,172 | | 1969 | 110,575 | | 1968 | 107,173 | | 1967 | 104,103 | | 1966 | 101,456 | | 1965 | 99,238 | | 1964 | 97,624 | | 1963 | 96,717 | | 1962 | 96,491 | | 1961 | 95,971 | | 1960 | 95,787 |
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