| Year | Value | | 2022 | 458,203 | | 2021 | 442,890 | | 2020 | 425,755 | | 2019 | 406,322 | | 2018 | 384,814 | | 2017 | 362,112 | | 2016 | 339,743 | | 2015 | 318,693 | | 2014 | 301,079 | | 2013 | 286,447 | | 2012 | 272,772 | | 2011 | 259,578 | | 2010 | 246,324 | | 2009 | 232,981 | | 2008 | 221,566 | | 2007 | 212,201 | | 2006 | 202,648 | | 2005 | 193,015 | | 2004 | 183,481 | | 2003 | 174,036 | | 2002 | 165,841 | | 2001 | 158,888 | | 2000 | 151,994 | | 1999 | 145,138 | | 1998 | 138,179 | | 1997 | 131,402 | | 1996 | 125,251 | | 1995 | 120,050 | | 1994 | 114,795 | | 1993 | 108,673 | | 1992 | 102,906 | | 1991 | 97,869 | | 1990 | 93,107 | | 1989 | 88,558 | | 1988 | 84,162 | | 1987 | 79,889 | | 1986 | 75,818 | | 1985 | 72,020 | | 1984 | 68,468 | | 1983 | 65,065 | | 1982 | 61,820 | | 1981 | 58,778 | | 1980 | 55,947 | | 1979 | 53,314 | | 1978 | 50,898 | | 1977 | 48,650 | | 1976 | 46,413 | | 1975 | 44,072 | | 1974 | 41,603 | | 1973 | 38,972 | | 1972 | 36,234 | | 1971 | 33,622 | | 1970 | 31,277 | | 1969 | 29,171 | | 1968 | 27,331 | | 1967 | 25,745 | | 1966 | 24,185 | | 1965 | 22,511 | | 1964 | 20,728 | | 1963 | 18,791 | | 1962 | 16,768 | | 1961 | 14,885 | | 1960 | 13,313 |
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