| Year | Value | | 2022 | 351,313 | | 2021 | 330,829 | | 2020 | 314,310 | | 2019 | 298,474 | | 2018 | 283,475 | | 2017 | 273,559 | | 2016 | 267,509 | | 2015 | 263,938 | | 2014 | 265,669 | | 2013 | 272,089 | | 2012 | 275,167 | | 2011 | 268,846 | | 2010 | 258,266 | | 2009 | 248,009 | | 2008 | 242,856 | | 2007 | 235,559 | | 2006 | 221,663 | | 2005 | 210,422 | | 2004 | 201,654 | | 2003 | 190,344 | | 2002 | 178,790 | | 2001 | 170,696 | | 2000 | 164,891 | | 1999 | 160,676 | | 1998 | 157,381 | | 1997 | 154,521 | | 1996 | 152,021 | | 1995 | 149,831 | | 1994 | 147,761 | | 1993 | 145,816 | | 1992 | 144,005 | | 1991 | 142,165 | | 1990 | 140,182 | | 1989 | 137,935 | | 1988 | 135,340 | | 1987 | 132,348 | | 1986 | 128,900 | | 1985 | 124,975 | | 1984 | 120,589 | | 1983 | 115,873 | | 1982 | 111,278 | | 1981 | 106,670 | | 1980 | 101,679 | | 1979 | 96,563 | | 1978 | 91,603 | | 1977 | 87,028 | | 1976 | 82,958 | | 1975 | 79,446 | | 1974 | 76,555 | | 1973 | 74,269 | | 1972 | 72,358 | | 1971 | 70,611 | | 1970 | 68,631 | | 1969 | 66,623 | | 1968 | 64,935 | | 1967 | 63,312 | | 1966 | 61,756 | | 1965 | 60,273 | | 1964 | 58,906 | | 1963 | 57,718 | | 1962 | 56,756 | | 1961 | 56,064 | | 1960 | 55,702 |
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