| Year | Value | | 2022 | 109,052 | | 2021 | 113,556 | | 2020 | 111,422 | | 2019 | 109,173 | | 2018 | 107,860 | | 2017 | 107,632 | | 2016 | 108,269 | | 2015 | 110,106 | | 2014 | 113,276 | | 2013 | 116,743 | | 2012 | 119,598 | | 2011 | 121,141 | | 2010 | 121,083 | | 2009 | 119,840 | | 2008 | 117,991 | | 2007 | 116,089 | | 2006 | 114,814 | | 2005 | 114,613 | | 2004 | 114,873 | | 2003 | 114,989 | | 2002 | 114,865 | | 2001 | 116,177 | | 2000 | 116,511 | | 1999 | 113,364 | | 1998 | 109,359 | | 1997 | 104,978 | | 1996 | 99,798 | | 1995 | 94,851 | | 1994 | 93,031 | | 1993 | 95,408 | | 1992 | 99,725 | | 1991 | 104,595 | | 1990 | 109,933 | | 1989 | 114,172 | | 1988 | 114,749 | | 1987 | 113,701 | | 1986 | 112,232 | | 1985 | 109,502 | | 1984 | 106,067 | | 1983 | 102,501 | | 1982 | 99,126 | | 1981 | 95,438 | | 1980 | 91,539 | | 1979 | 87,608 | | 1978 | 84,092 | | 1977 | 80,860 | | 1976 | 77,557 | | 1975 | 74,627 | | 1974 | 71,431 | | 1973 | 67,618 | | 1972 | 64,098 | | 1971 | 60,819 | | 1970 | 57,278 | | 1969 | 54,202 | | 1968 | 51,928 | | 1967 | 50,525 | | 1966 | 50,244 | | 1965 | 50,657 | | 1964 | 51,249 | | 1963 | 51,208 | | 1962 | 50,226 | | 1961 | 47,870 | | 1960 | 44,216 |
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