| Year | Value | | 2022 | 98,353 | | 2021 | 93,876 | | 2020 | 90,639 | | 2019 | 88,301 | | 2018 | 86,601 | | 2017 | 86,421 | | 2016 | 87,566 | | 2015 | 88,840 | | 2014 | 90,051 | | 2013 | 91,378 | | 2012 | 93,247 | | 2011 | 96,381 | | 2010 | 101,032 | | 2009 | 105,480 | | 2008 | 108,616 | | 2007 | 111,205 | | 2006 | 113,284 | | 2005 | 115,715 | | 2004 | 118,834 | | 2003 | 121,992 | | 2002 | 125,202 | | 2001 | 128,764 | | 2000 | 132,422 | | 1999 | 135,341 | | 1998 | 137,478 | | 1997 | 138,504 | | 1996 | 137,462 | | 1995 | 134,862 | | 1994 | 131,775 | | 1993 | 127,969 | | 1992 | 124,316 | | 1991 | 122,035 | | 1990 | 120,965 | | 1989 | 120,500 | | 1988 | 119,790 | | 1987 | 117,925 | | 1986 | 115,048 | | 1985 | 112,208 | | 1984 | 108,829 | | 1983 | 106,385 | | 1982 | 107,442 | | 1981 | 110,749 | | 1980 | 113,379 | | 1979 | 115,464 | | 1978 | 117,339 | | 1977 | 117,062 | | 1976 | 115,682 | | 1975 | 115,042 | | 1974 | 114,621 | | 1973 | 114,007 | | 1972 | 113,754 | | 1971 | 113,063 | | 1970 | 112,222 | | 1969 | 112,290 | | 1968 | 112,147 | | 1967 | 110,693 | | 1966 | 107,262 | | 1965 | 101,853 | | 1964 | 95,764 | | 1963 | 89,717 | | 1962 | 83,962 | | 1961 | 79,063 | | 1960 | 74,680 |
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