| Year | Value | | 2022 | 155,017 | | 2021 | 154,466 | | 2020 | 156,385 | | 2019 | 158,765 | | 2018 | 160,909 | | 2017 | 165,083 | | 2016 | 170,978 | | 2015 | 176,581 | | 2014 | 183,135 | | 2013 | 189,411 | | 2012 | 193,160 | | 2011 | 194,317 | | 2010 | 192,240 | | 2009 | 189,496 | | 2008 | 188,082 | | 2007 | 185,469 | | 2006 | 179,456 | | 2005 | 171,629 | | 2004 | 164,716 | | 2003 | 159,348 | | 2002 | 153,679 | | 2001 | 146,184 | | 2000 | 139,005 | | 1999 | 134,152 | | 1998 | 131,293 | | 1997 | 129,150 | | 1996 | 127,327 | | 1995 | 126,102 | | 1994 | 125,313 | | 1993 | 125,039 | | 1992 | 124,697 | | 1991 | 122,963 | | 1990 | 120,330 | | 1989 | 119,185 | | 1988 | 120,392 | | 1987 | 121,958 | | 1986 | 122,107 | | 1985 | 121,751 | | 1984 | 119,681 | | 1983 | 117,874 | | 1982 | 118,239 | | 1981 | 118,369 | | 1980 | 117,891 | | 1979 | 117,365 | | 1978 | 114,056 | | 1977 | 107,224 | | 1976 | 99,183 | | 1975 | 90,931 | | 1974 | 84,959 | | 1973 | 80,569 | | 1972 | 76,909 | | 1971 | 75,373 | | 1970 | 75,246 | | 1969 | 74,522 | | 1968 | 73,682 | | 1967 | 73,655 | | 1966 | 73,095 | | 1965 | 72,602 | | 1964 | 72,916 | | 1963 | 73,220 | | 1962 | 73,593 | | 1961 | 74,599 | | 1960 | 76,646 |
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