| Year | Value | | 2022 | 78,900 | | 2021 | 83,425 | | 2020 | 87,748 | | 2019 | 91,660 | | 2018 | 94,787 | | 2017 | 96,380 | | 2016 | 96,355 | | 2015 | 94,686 | | 2014 | 92,473 | | 2013 | 91,050 | | 2012 | 91,377 | | 2011 | 92,024 | | 2010 | 92,357 | | 2009 | 90,998 | | 2008 | 88,151 | | 2007 | 85,266 | | 2006 | 82,531 | | 2005 | 80,295 | | 2004 | 78,662 | | 2003 | 78,333 | | 2002 | 79,747 | | 2001 | 81,774 | | 2000 | 83,895 | | 1999 | 86,639 | | 1998 | 90,092 | | 1997 | 93,812 | | 1996 | 98,475 | | 1995 | 103,790 | | 1994 | 109,595 | | 1993 | 115,849 | | 1992 | 123,313 | | 1991 | 131,142 | | 1990 | 137,957 | | 1989 | 143,517 | | 1988 | 146,938 | | 1987 | 146,867 | | 1986 | 144,399 | | 1985 | 141,390 | | 1984 | 137,936 | | 1983 | 134,263 | | 1982 | 131,402 | | 1981 | 129,540 | | 1980 | 128,402 | | 1979 | 127,609 | | 1978 | 126,645 | | 1977 | 125,197 | | 1976 | 123,020 | | 1975 | 120,124 | | 1974 | 116,874 | | 1973 | 113,865 | | 1972 | 111,730 | | 1971 | 110,598 | | 1970 | 110,459 | | 1969 | 111,182 | | 1968 | 113,060 | | 1967 | 116,281 | | 1966 | 120,517 | | 1965 | 125,258 | | 1964 | 129,824 | | 1963 | 133,135 | | 1962 | 134,672 | | 1961 | 134,301 | | 1960 | 132,415 |
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