| Year | Value | | 2022 | 125,472 | | 2021 | 124,399 | | 2020 | 126,784 | | 2019 | 123,810 | | 2018 | 120,499 | | 2017 | 117,261 | | 2016 | 114,326 | | 2015 | 108,354 | | 2014 | 100,652 | | 2013 | 95,029 | | 2012 | 91,987 | | 2011 | 90,751 | | 2010 | 93,162 | | 2009 | 97,832 | | 2008 | 101,018 | | 2007 | 102,841 | | 2006 | 104,216 | | 2005 | 105,288 | | 2004 | 106,031 | | 2003 | 106,997 | | 2002 | 107,283 | | 2001 | 106,802 | | 2000 | 111,244 | | 1999 | 112,472 | | 1998 | 111,835 | | 1997 | 109,914 | | 1996 | 107,386 | | 1995 | 103,584 | | 1994 | 98,248 | | 1993 | 92,032 | | 1992 | 86,718 | | 1991 | 84,741 | | 1990 | 83,315 | | 1989 | 80,118 | | 1988 | 75,430 | | 1987 | 68,695 | | 1986 | 60,838 | | 1985 | 54,109 | | 1984 | 51,050 | | 1983 | 53,055 | | 1982 | 59,474 | | 1981 | 68,058 | | 1980 | 76,238 | | 1979 | 82,147 | | 1978 | 85,403 | | 1977 | 86,793 | | 1976 | 87,123 | | 1975 | 86,637 | | 1974 | 85,461 | | 1973 | 83,719 | | 1972 | 81,745 | | 1971 | 79,915 | | 1970 | 78,294 | | 1969 | 76,655 | | 1968 | 74,671 | | 1967 | 72,157 | | 1966 | 68,947 | | 1965 | 65,176 | | 1964 | 61,199 | | 1963 | 57,237 | | 1962 | 53,443 | | 1961 | 50,040 | | 1960 | 47,299 |
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