| Year | Value | | 2022 | 153,860 | | 2021 | 150,223 | | 2020 | 147,775 | | 2019 | 144,773 | | 2018 | 141,183 | | 2017 | 138,137 | | 2016 | 135,185 | | 2015 | 131,801 | | 2014 | 128,780 | | 2013 | 126,359 | | 2012 | 124,264 | | 2011 | 122,083 | | 2010 | 119,779 | | 2009 | 116,143 | | 2008 | 113,394 | | 2007 | 112,457 | | 2006 | 111,537 | | 2005 | 111,119 | | 2004 | 110,800 | | 2003 | 108,247 | | 2002 | 102,867 | | 2001 | 95,774 | | 2000 | 87,919 | | 1999 | 82,179 | | 1998 | 78,092 | | 1997 | 74,703 | | 1996 | 73,869 | | 1995 | 74,675 | | 1994 | 74,368 | | 1993 | 73,531 | | 1992 | 73,148 | | 1991 | 71,683 | | 1990 | 69,566 | | 1989 | 68,516 | | 1988 | 68,375 | | 1987 | 68,636 | | 1986 | 69,938 | | 1985 | 71,993 | | 1984 | 73,534 | | 1983 | 74,404 | | 1982 | 75,230 | | 1981 | 76,065 | | 1980 | 77,016 | | 1979 | 78,169 | | 1978 | 78,571 | | 1977 | 77,502 | | 1976 | 76,425 | | 1975 | 75,444 | | 1974 | 74,607 | | 1973 | 74,642 | | 1972 | 75,709 | | 1971 | 76,773 | | 1970 | 77,077 | | 1969 | 76,295 | | 1968 | 74,998 | | 1967 | 73,566 | | 1966 | 71,803 | | 1965 | 70,397 | | 1964 | 69,271 | | 1963 | 68,470 | | 1962 | 67,403 | | 1961 | 67,038 | | 1960 | 69,766 |
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