| Year | Value | | 2022 | 184,080 | | 2021 | 171,751 | | 2020 | 162,450 | | 2019 | 153,420 | | 2018 | 139,234 | | 2017 | 122,242 | | 2016 | 111,868 | | 2015 | 98,821 | | 2014 | 84,256 | | 2013 | 74,725 | | 2012 | 63,639 | | 2011 | 53,466 | | 2010 | 46,705 | | 2009 | 42,893 | | 2008 | 39,269 | | 2007 | 36,063 | | 2006 | 33,287 | | 2005 | 30,909 | | 2004 | 28,979 | | 2003 | 27,356 | | 2002 | 25,822 | | 2001 | 24,383 | | 2000 | 23,092 | | 1999 | 22,015 | | 1998 | 21,190 | | 1997 | 20,576 | | 1996 | 20,051 | | 1995 | 20,233 | | 1994 | 22,580 | | 1993 | 26,061 | | 1992 | 26,097 | | 1991 | 20,388 | | 1990 | 22,464 | | 1989 | 26,838 | | 1988 | 23,342 | | 1987 | 20,239 | | 1986 | 17,474 | | 1985 | 15,895 | | 1984 | 15,197 | | 1983 | 14,676 | | 1982 | 14,446 | | 1981 | 14,220 | | 1980 | 13,708 | | 1979 | 12,975 | | 1978 | 12,336 | | 1977 | 11,753 | | 1976 | 11,227 | | 1975 | 10,637 | | 1974 | 9,983 | | 1973 | 9,417 | | 1972 | 8,919 | | 1971 | 8,408 | | 1970 | 7,782 | | 1969 | 7,056 | | 1968 | 6,291 | | 1967 | 5,527 | | 1966 | 4,868 | | 1965 | 4,364 | | 1964 | 4,009 | | 1963 | 3,808 | | 1962 | 3,735 | | 1961 | 3,696 | | 1960 | 3,616 |
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