| Year | Value | | 2022 | 76,342 | | 2021 | 73,344 | | 2020 | 70,100 | | 2019 | 67,896 | | 2018 | 66,059 | | 2017 | 63,575 | | 2016 | 60,599 | | 2015 | 57,931 | | 2014 | 55,771 | | 2013 | 53,832 | | 2012 | 52,183 | | 2011 | 51,663 | | 2010 | 51,679 | | 2009 | 49,848 | | 2008 | 46,594 | | 2007 | 43,539 | | 2006 | 40,430 | | 2005 | 37,170 | | 2004 | 33,822 | | 2003 | 30,783 | | 2002 | 28,390 | | 2001 | 26,367 | | 2000 | 24,448 | | 1999 | 22,641 | | 1998 | 20,937 | | 1997 | 19,332 | | 1996 | 17,812 | | 1995 | 16,371 | | 1994 | 15,018 | | 1993 | 13,793 | | 1992 | 12,725 | | 1991 | 11,822 | | 1990 | 11,151 | | 1989 | 10,715 | | 1988 | 10,397 | | 1987 | 10,142 | | 1986 | 9,911 | | 1985 | 9,687 | | 1984 | 9,470 | | 1983 | 9,254 | | 1982 | 9,027 | | 1981 | 8,728 | | 1980 | 8,260 | | 1979 | 7,718 | | 1978 | 7,245 | | 1977 | 6,827 | | 1976 | 6,457 | | 1975 | 6,137 | | 1974 | 5,861 | | 1973 | 5,633 | | 1972 | 5,443 | | 1971 | 5,276 | | 1970 | 5,104 | | 1969 | 4,906 | | 1968 | 4,679 | | 1967 | 4,439 | | 1966 | 4,193 | | 1965 | 3,945 | | 1964 | 3,722 | | 1963 | 3,531 | | 1962 | 3,362 | | 1961 | 3,214 | | 1960 | 3,080 |
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