| Year | Value | | 2022 | 97,052 | | 2021 | 93,373 | | 2020 | 99,076 | | 2019 | 104,623 | | 2018 | 110,738 | | 2017 | 117,171 | | 2016 | 124,099 | | 2015 | 129,582 | | 2014 | 132,386 | | 2013 | 132,426 | | 2012 | 130,554 | | 2011 | 127,020 | | 2010 | 123,189 | | 2009 | 119,387 | | 2008 | 115,796 | | 2007 | 113,202 | | 2006 | 111,593 | | 2005 | 110,329 | | 2004 | 109,277 | | 2003 | 108,501 | | 2002 | 107,626 | | 2001 | 106,311 | | 2000 | 104,295 | | 1999 | 101,353 | | 1998 | 97,971 | | 1997 | 94,928 | | 1996 | 93,053 | | 1995 | 92,002 | | 1994 | 92,448 | | 1993 | 94,632 | | 1992 | 98,608 | | 1991 | 103,945 | | 1990 | 110,421 | | 1989 | 117,093 | | 1988 | 122,240 | | 1987 | 125,119 | | 1986 | 125,705 | | 1985 | 124,412 | | 1984 | 122,220 | | 1983 | 119,966 | | 1982 | 118,159 | | 1981 | 117,228 | | 1980 | 117,420 | | 1979 | 116,763 | | 1978 | 113,547 | | 1977 | 107,500 | | 1976 | 98,210 | | 1975 | 86,401 | | 1974 | 75,373 | | 1973 | 67,893 | | 1972 | 64,637 | | 1971 | 65,634 | | 1970 | 69,511 | | 1969 | 74,522 | | 1968 | 79,127 | | 1967 | 82,574 | | 1966 | 84,772 | | 1965 | 85,726 | | 1964 | 85,585 | | 1963 | 84,511 | | 1962 | 82,818 | | 1961 | 80,869 | | 1960 | 79,239 |
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