| Year | Value | | 2022 | 180,559 | | 2021 | 184,682 | | 2020 | 188,792 | | 2019 | 191,070 | | 2018 | 190,066 | | 2017 | 186,524 | | 2016 | 180,772 | | 2015 | 173,856 | | 2014 | 167,751 | | 2013 | 162,478 | | 2012 | 156,785 | | 2011 | 150,306 | | 2010 | 142,444 | | 2009 | 133,427 | | 2008 | 125,745 | | 2007 | 121,028 | | 2006 | 118,895 | | 2005 | 118,352 | | 2004 | 118,826 | | 2003 | 119,778 | | 2002 | 120,880 | | 2001 | 122,581 | | 2000 | 125,149 | | 1999 | 127,825 | | 1998 | 130,912 | | 1997 | 135,289 | | 1996 | 140,749 | | 1995 | 147,069 | | 1994 | 153,453 | | 1993 | 159,167 | | 1992 | 163,703 | | 1991 | 166,770 | | 1990 | 168,266 | | 1989 | 168,046 | | 1988 | 165,374 | | 1987 | 160,786 | | 1986 | 155,820 | | 1985 | 151,190 | | 1984 | 147,249 | | 1983 | 143,997 | | 1982 | 141,270 | | 1981 | 138,979 | | 1980 | 137,309 | | 1979 | 136,300 | | 1978 | 135,248 | | 1977 | 133,458 | | 1976 | 130,846 | | 1975 | 127,581 | | 1974 | 123,980 | | 1973 | 120,229 | | 1972 | 116,926 | | 1971 | 114,628 | | 1970 | 113,230 | | 1969 | 112,620 | | 1968 | 112,247 | | 1967 | 110,742 | | 1966 | 107,730 | | 1965 | 104,181 | | 1964 | 100,684 | | 1963 | 97,407 | | 1962 | 94,585 | | 1961 | 91,409 | | 1960 | 86,798 |
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