| Year | Value | | 2022 | 226,296 | | 2021 | 213,142 | | 2020 | 202,096 | | 2019 | 192,593 | | 2018 | 183,253 | | 2017 | 173,939 | | 2016 | 165,720 | | 2015 | 158,922 | | 2014 | 152,499 | | 2013 | 145,755 | | 2012 | 138,736 | | 2011 | 131,573 | | 2010 | 124,405 | | 2009 | 117,295 | | 2008 | 110,001 | | 2007 | 102,490 | | 2006 | 95,155 | | 2005 | 88,274 | | 2004 | 81,812 | | 2003 | 75,702 | | 2002 | 70,038 | | 2001 | 64,922 | | 2000 | 60,442 | | 1999 | 56,714 | | 1998 | 53,871 | | 1997 | 51,865 | | 1996 | 50,483 | | 1995 | 49,591 | | 1994 | 49,201 | | 1993 | 49,315 | | 1992 | 49,730 | | 1991 | 50,204 | | 1990 | 50,547 | | 1989 | 50,644 | | 1988 | 50,425 | | 1987 | 49,816 | | 1986 | 48,837 | | 1985 | 47,577 | | 1984 | 46,059 | | 1983 | 44,214 | | 1982 | 42,105 | | 1981 | 39,912 | | 1980 | 37,766 | | 1979 | 35,693 | | 1978 | 33,726 | | 1977 | 31,912 | | 1976 | 30,198 | | 1975 | 28,557 | | 1974 | 26,989 | | 1973 | 25,456 | | 1972 | 23,992 | | 1971 | 22,704 | | 1970 | 21,663 | | 1969 | 20,883 | | 1968 | 20,408 | | 1967 | 20,179 | | 1966 | 19,986 | | 1965 | 19,679 | | 1964 | 19,240 | | 1963 | 18,643 | | 1962 | 17,876 | | 1961 | 17,071 | | 1960 | 16,341 |
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