| Year | Value | | 2022 | 198,519 | | 2021 | 191,157 | | 2020 | 178,252 | | 2019 | 161,229 | | 2018 | 143,137 | | 2017 | 125,940 | | 2016 | 111,838 | | 2015 | 104,644 | | 2014 | 102,727 | | 2013 | 104,267 | | 2012 | 108,876 | | 2011 | 113,369 | | 2010 | 116,685 | | 2009 | 118,058 | | 2008 | 119,177 | | 2007 | 118,992 | | 2006 | 117,160 | | 2005 | 115,447 | | 2004 | 114,051 | | 2003 | 111,314 | | 2002 | 109,722 | | 2001 | 108,148 | | 2000 | 105,642 | | 1999 | 102,900 | | 1998 | 100,819 | | 1997 | 98,849 | | 1996 | 96,450 | | 1995 | 88,752 | | 1994 | 82,299 | | 1993 | 76,282 | | 1992 | 71,349 | | 1991 | 68,445 | | 1990 | 67,251 | | 1989 | 67,668 | | 1988 | 68,277 | | 1987 | 68,920 | | 1986 | 68,324 | | 1985 | 66,427 | | 1984 | 64,250 | | 1983 | 62,054 | | 1982 | 59,509 | | 1981 | 56,584 | | 1980 | 52,623 | | 1979 | 49,273 | | 1978 | 45,568 | | 1977 | 43,691 | | 1976 | 42,277 | | 1975 | 41,309 | | 1974 | 40,290 | | 1973 | 38,794 | | 1972 | 37,387 | | 1971 | 36,014 | | 1970 | 33,813 | | 1969 | 31,085 | | 1968 | 28,863 | | 1967 | 26,934 | | 1966 | 25,213 | | 1965 | 24,141 | | 1964 | 22,808 | | 1963 | 21,618 | | 1962 | 20,189 | | 1961 | 18,586 | | 1960 | 17,190 |
|