| Year | Value | | 2022 | 279,208 | | 2021 | 274,097 | | 2020 | 266,916 | | 2019 | 259,060 | | 2018 | 250,474 | | 2017 | 241,173 | | 2016 | 231,277 | | 2015 | 216,430 | | 2014 | 196,632 | | 2013 | 177,663 | | 2012 | 166,712 | | 2011 | 160,842 | | 2010 | 152,966 | | 2009 | 145,543 | | 2008 | 138,213 | | 2007 | 130,698 | | 2006 | 118,892 | | 2005 | 107,508 | | 2004 | 101,286 | | 2003 | 95,527 | | 2002 | 90,283 | | 2001 | 85,434 | | 2000 | 80,973 | | 1999 | 76,953 | | 1998 | 73,378 | | 1997 | 70,075 | | 1996 | 66,834 | | 1995 | 63,554 | | 1994 | 60,193 | | 1993 | 56,826 | | 1992 | 53,781 | | 1991 | 51,345 | | 1990 | 49,497 | | 1989 | 48,050 | | 1988 | 46,833 | | 1987 | 45,684 | | 1986 | 44,401 | | 1985 | 42,832 | | 1984 | 40,922 | | 1983 | 38,785 | | 1982 | 36,605 | | 1981 | 34,539 | | 1980 | 32,721 | | 1979 | 31,222 | | 1978 | 29,991 | | 1977 | 28,939 | | 1976 | 28,067 | | 1975 | 27,351 | | 1974 | 26,741 | | 1973 | 26,198 | | 1972 | 25,594 | | 1971 | 24,757 | | 1970 | 23,586 | | 1969 | 22,093 | | 1968 | 20,378 | | 1967 | 18,626 | | 1966 | 17,060 | | 1965 | 15,784 | | 1964 | 14,790 | | 1963 | 14,034 | | 1962 | 13,441 | | 1961 | 12,923 | | 1960 | 12,437 |
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