| Year | Value | | 2022 | 166,117 | | 2021 | 166,153 | | 2020 | 164,451 | | 2019 | 160,543 | | 2018 | 153,707 | | 2017 | 146,360 | | 2016 | 139,456 | | 2015 | 133,805 | | 2014 | 127,912 | | 2013 | 121,182 | | 2012 | 114,565 | | 2011 | 107,177 | | 2010 | 99,780 | | 2009 | 92,788 | | 2008 | 87,544 | | 2007 | 82,393 | | 2006 | 76,937 | | 2005 | 72,009 | | 2004 | 67,735 | | 2003 | 63,519 | | 2002 | 59,982 | | 2001 | 56,048 | | 2000 | 52,593 | | 1999 | 50,334 | | 1998 | 49,386 | | 1997 | 49,635 | | 1996 | 50,094 | | 1995 | 46,840 | | 1994 | 42,952 | | 1993 | 38,673 | | 1992 | 34,483 | | 1991 | 30,447 | | 1990 | 26,617 | | 1989 | 23,610 | | 1988 | 21,008 | | 1987 | 18,898 | | 1986 | 17,106 | | 1985 | 15,690 | | 1984 | 14,715 | | 1983 | 13,883 | | 1982 | 12,917 | | 1981 | 11,856 | | 1980 | 10,516 | | 1979 | 9,321 | | 1978 | 8,257 | | 1977 | 7,564 | | 1976 | 6,958 | | 1975 | 6,478 | | 1974 | 6,131 | | 1973 | 5,879 | | 1972 | 5,742 | | 1971 | 5,625 | | 1970 | 5,158 | | 1969 | 4,435 | | 1968 | 3,832 | | 1967 | 3,323 | | 1966 | 2,918 | | 1965 | 2,636 | | 1964 | 2,375 | | 1963 | 2,198 | | 1962 | 2,035 | | 1961 | 1,892 | | 1960 | 1,759 |
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