| Year | Value | | 2022 | 137,336 | | 2021 | 126,375 | | 2020 | 116,785 | | 2019 | 108,304 | | 2018 | 99,715 | | 2017 | 91,443 | | 2016 | 84,450 | | 2015 | 78,601 | | 2014 | 74,432 | | 2013 | 68,333 | | 2012 | 59,155 | | 2011 | 50,929 | | 2010 | 45,068 | | 2009 | 41,239 | | 2008 | 37,818 | | 2007 | 34,633 | | 2006 | 31,622 | | 2005 | 29,014 | | 2004 | 27,114 | | 2003 | 25,656 | | 2002 | 24,268 | | 2001 | 22,935 | | 2000 | 21,635 | | 1999 | 20,337 | | 1998 | 19,042 | | 1997 | 17,771 | | 1996 | 16,561 | | 1995 | 16,245 | | 1994 | 18,409 | | 1993 | 21,821 | | 1992 | 22,112 | | 1991 | 17,400 | | 1990 | 19,767 | | 1989 | 24,439 | | 1988 | 22,212 | | 1987 | 20,185 | | 1986 | 18,295 | | 1985 | 17,019 | | 1984 | 16,221 | | 1983 | 15,508 | | 1982 | 14,958 | | 1981 | 14,436 | | 1980 | 13,779 | | 1979 | 13,015 | | 1978 | 12,319 | | 1977 | 11,680 | | 1976 | 11,115 | | 1975 | 10,404 | | 1974 | 9,571 | | 1973 | 8,864 | | 1972 | 8,244 | | 1971 | 7,645 | | 1970 | 7,040 | | 1969 | 6,419 | | 1968 | 5,778 | | 1967 | 5,151 | | 1966 | 4,592 | | 1965 | 4,133 | | 1964 | 3,758 | | 1963 | 3,442 | | 1962 | 3,183 | | 1961 | 2,969 | | 1960 | 2,792 |
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