| Year | Value | | 2022 | 320,790 | | 2021 | 315,157 | | 2020 | 309,507 | | 2019 | 303,914 | | 2018 | 298,289 | | 2017 | 293,313 | | 2016 | 289,356 | | 2015 | 285,748 | | 2014 | 282,216 | | 2013 | 278,630 | | 2012 | 274,398 | | 2011 | 269,312 | | 2010 | 263,756 | | 2009 | 257,785 | | 2008 | 251,209 | | 2007 | 244,106 | | 2006 | 236,539 | | 2005 | 228,616 | | 2004 | 220,493 | | 2003 | 212,295 | | 2002 | 204,089 | | 2001 | 195,101 | | 2000 | 185,472 | | 1999 | 176,170 | | 1998 | 167,738 | | 1997 | 160,034 | | 1996 | 152,328 | | 1995 | 144,679 | | 1994 | 137,219 | | 1993 | 130,540 | | 1992 | 125,118 | | 1991 | 120,969 | | 1990 | 118,033 | | 1989 | 116,152 | | 1988 | 115,218 | | 1987 | 114,706 | | 1986 | 113,946 | | 1985 | 112,519 | | 1984 | 110,386 | | 1983 | 107,489 | | 1982 | 103,916 | | 1981 | 100,121 | | 1980 | 96,391 | | 1979 | 92,633 | | 1978 | 88,754 | | 1977 | 84,927 | | 1976 | 81,309 | | 1975 | 77,995 | | 1974 | 75,016 | | 1973 | 72,385 | | 1972 | 70,083 | | 1971 | 68,026 | | 1970 | 66,301 | | 1969 | 64,711 | | 1968 | 63,085 | | 1967 | 61,561 | | 1966 | 60,104 | | 1965 | 58,785 | | 1964 | 57,511 | | 1963 | 56,191 | | 1962 | 54,918 | | 1961 | 53,690 | | 1960 | 52,507 |
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