| Year | Value | | 2022 | 185,794 | | 2021 | 188,943 | | 2020 | 191,631 | | 2019 | 193,467 | | 2018 | 194,653 | | 2017 | 194,768 | | 2016 | 193,948 | | 2015 | 193,056 | | 2014 | 191,024 | | 2013 | 187,398 | | 2012 | 183,283 | | 2011 | 178,750 | | 2010 | 174,064 | | 2009 | 170,205 | | 2008 | 167,164 | | 2007 | 164,475 | | 2006 | 162,549 | | 2005 | 161,580 | | 2004 | 160,400 | | 2003 | 159,079 | | 2002 | 158,092 | | 2001 | 156,661 | | 2000 | 155,168 | | 1999 | 154,491 | | 1998 | 154,700 | | 1997 | 155,816 | | 1996 | 158,562 | | 1995 | 160,482 | | 1994 | 159,697 | | 1993 | 156,115 | | 1992 | 148,965 | | 1991 | 138,249 | | 1990 | 127,635 | | 1989 | 119,385 | | 1988 | 112,453 | | 1987 | 107,407 | | 1986 | 104,265 | | 1985 | 101,506 | | 1984 | 98,489 | | 1983 | 96,506 | | 1982 | 95,941 | | 1981 | 96,720 | | 1980 | 98,785 | | 1979 | 101,492 | | 1978 | 104,004 | | 1977 | 106,103 | | 1976 | 108,241 | | 1975 | 110,539 | | 1974 | 113,248 | | 1973 | 117,032 | | 1972 | 120,885 | | 1971 | 124,133 | | 1970 | 128,051 | | 1969 | 130,167 | | 1968 | 129,470 | | 1967 | 129,062 | | 1966 | 128,044 | | 1965 | 124,990 | | 1964 | 123,272 | | 1963 | 123,353 | | 1962 | 122,726 | | 1961 | 122,344 | | 1960 | 122,077 |
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