| Year | Value | | 2022 | 166,232 | | 2021 | 164,488 | | 2020 | 163,797 | | 2019 | 164,427 | | 2018 | 165,651 | | 2017 | 168,553 | | 2016 | 173,421 | | 2015 | 177,553 | | 2014 | 179,882 | | 2013 | 179,890 | | 2012 | 176,012 | | 2011 | 167,890 | | 2010 | 157,856 | | 2009 | 148,349 | | 2008 | 140,076 | | 2007 | 133,575 | | 2006 | 129,240 | | 2005 | 126,208 | | 2004 | 123,400 | | 2003 | 120,577 | | 2002 | 117,928 | | 2001 | 116,154 | | 2000 | 115,234 | | 1999 | 114,822 | | 1998 | 115,261 | | 1997 | 116,239 | | 1996 | 117,268 | | 1995 | 118,660 | | 1994 | 120,831 | | 1993 | 123,442 | | 1992 | 125,325 | | 1991 | 127,548 | | 1990 | 130,545 | | 1989 | 131,518 | | 1988 | 130,900 | | 1987 | 130,622 | | 1986 | 129,169 | | 1985 | 126,162 | | 1984 | 125,305 | | 1983 | 126,754 | | 1982 | 128,236 | | 1981 | 129,825 | | 1980 | 131,192 | | 1979 | 132,073 | | 1978 | 131,971 | | 1977 | 131,048 | | 1976 | 129,707 | | 1975 | 128,312 | | 1974 | 126,354 | | 1973 | 123,938 | | 1972 | 121,884 | | 1971 | 120,206 | | 1970 | 118,289 | | 1969 | 116,200 | | 1968 | 114,403 | | 1967 | 112,471 | | 1966 | 110,539 | | 1965 | 108,854 | | 1964 | 106,888 | | 1963 | 104,418 | | 1962 | 101,722 | | 1961 | 98,749 | | 1960 | 95,668 |
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