Year | Value | 2022 | 178,531 | 2021 | 175,774 | 2020 | 174,400 | 2019 | 173,805 | 2018 | 173,637 | 2017 | 173,119 | 2016 | 171,791 | 2015 | 170,673 | 2014 | 170,656 | 2013 | 171,593 | 2012 | 174,648 | 2011 | 180,136 | 2010 | 185,212 | 2009 | 188,364 | 2008 | 188,616 | 2007 | 184,536 | 2006 | 176,129 | 2005 | 165,856 | 2004 | 156,106 | 2003 | 147,769 | 2002 | 141,402 | 2001 | 137,104 | 2000 | 134,130 | 1999 | 131,535 | 1998 | 128,879 | 1997 | 126,324 | 1996 | 124,634 | 1995 | 123,644 | 1994 | 123,108 | 1993 | 123,592 | 1992 | 124,675 | 1991 | 125,871 | 1990 | 127,567 | 1989 | 129,980 | 1988 | 132,758 | 1987 | 134,761 | 1986 | 137,099 | 1985 | 140,263 | 1984 | 141,146 | 1983 | 140,202 | 1982 | 139,773 | 1981 | 138,347 | 1980 | 135,401 | 1979 | 134,605 | 1978 | 135,985 | 1977 | 137,382 | 1976 | 138,966 | 1975 | 140,497 | 1974 | 141,721 | 1973 | 141,798 | 1972 | 140,882 | 1971 | 139,526 | 1970 | 137,726 | 1969 | 135,267 | 1968 | 132,804 | 1967 | 130,805 | 1966 | 129,080 | 1965 | 127,401 | 1964 | 125,569 | 1963 | 123,769 | 1962 | 121,822 | 1961 | 119,789 | 1960 | 117,969 |
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