| Year | Value | | 2022 | 254,129 | | 2021 | 242,777 | | 2020 | 232,067 | | 2019 | 222,916 | | 2018 | 215,697 | | 2017 | 210,478 | | 2016 | 206,734 | | 2015 | 203,779 | | 2014 | 200,985 | | 2013 | 197,857 | | 2012 | 194,383 | | 2011 | 190,831 | | 2010 | 187,522 | | 2009 | 184,887 | | 2008 | 183,010 | | 2007 | 181,736 | | 2006 | 180,781 | | 2005 | 179,342 | | 2004 | 176,607 | | 2003 | 172,071 | | 2002 | 165,201 | | 2001 | 156,116 | | 2000 | 145,780 | | 1999 | 136,121 | | 1998 | 128,074 | | 1997 | 121,512 | | 1996 | 115,805 | | 1995 | 110,601 | | 1994 | 106,135 | | 1993 | 102,353 | | 1992 | 99,020 | | 1991 | 93,515 | | 1990 | 85,539 | | 1989 | 76,973 | | 1988 | 69,950 | | 1987 | 66,985 | | 1986 | 68,364 | | 1985 | 72,748 | | 1984 | 79,202 | | 1983 | 87,076 | | 1982 | 93,674 | | 1981 | 97,800 | | 1980 | 99,546 | | 1979 | 99,052 | | 1978 | 96,226 | | 1977 | 91,956 | | 1976 | 88,463 | | 1975 | 86,568 | | 1974 | 85,959 | | 1973 | 86,598 | | 1972 | 87,820 | | 1971 | 87,679 | | 1970 | 84,963 | | 1969 | 79,926 | | 1968 | 72,851 | | 1967 | 64,366 | | 1966 | 56,320 | | 1965 | 49,806 | | 1964 | 44,556 | | 1963 | 40,351 | | 1962 | 37,438 | | 1961 | 35,554 | | 1960 | 34,481 |
|