| Year | Value | | 2022 | 117,873 | | 2021 | 122,037 | | 2020 | 126,329 | | 2019 | 130,684 | | 2018 | 133,925 | | 2017 | 136,095 | | 2016 | 137,564 | | 2015 | 137,365 | | 2014 | 136,114 | | 2013 | 135,179 | | 2012 | 134,427 | | 2011 | 134,153 | | 2010 | 134,610 | | 2009 | 134,920 | | 2008 | 134,474 | | 2007 | 133,583 | | 2006 | 132,217 | | 2005 | 130,430 | | 2004 | 128,226 | | 2003 | 125,761 | | 2002 | 123,281 | | 2001 | 120,724 | | 2000 | 118,459 | | 1999 | 117,023 | | 1998 | 116,351 | | 1997 | 116,349 | | 1996 | 117,092 | | 1995 | 118,094 | | 1994 | 119,005 | | 1993 | 119,996 | | 1992 | 120,949 | | 1991 | 121,551 | | 1990 | 121,732 | | 1989 | 121,570 | | 1988 | 120,715 | | 1987 | 119,075 | | 1986 | 117,291 | | 1985 | 116,163 | | 1984 | 114,633 | | 1983 | 112,442 | | 1982 | 110,134 | | 1981 | 106,809 | | 1980 | 102,001 | | 1979 | 97,031 | | 1978 | 92,425 | | 1977 | 87,758 | | 1976 | 83,701 | | 1975 | 80,066 | | 1974 | 76,088 | | 1973 | 72,475 | | 1972 | 70,076 | | 1971 | 68,286 | | 1970 | 67,050 | | 1969 | 67,037 | | 1968 | 67,532 | | 1967 | 67,597 | | 1966 | 67,378 | | 1965 | 66,889 | | 1964 | 66,171 | | 1963 | 65,281 | | 1962 | 64,403 | | 1961 | 63,821 | | 1960 | 63,725 |
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