| Year | Value | | 2022 | 222,929 | | 2021 | 214,418 | | 2020 | 209,013 | | 2019 | 207,194 | | 2018 | 206,978 | | 2017 | 207,750 | | 2016 | 208,887 | | 2015 | 209,080 | | 2014 | 207,830 | | 2013 | 205,368 | | 2012 | 201,294 | | 2011 | 195,491 | | 2010 | 188,143 | | 2009 | 180,065 | | 2008 | 171,528 | | 2007 | 163,411 | | 2006 | 156,913 | | 2005 | 153,382 | | 2004 | 151,468 | | 2003 | 149,403 | | 2002 | 147,693 | | 2001 | 146,480 | | 2000 | 144,868 | | 1999 | 142,510 | | 1998 | 140,081 | | 1997 | 138,006 | | 1996 | 136,145 | | 1995 | 134,444 | | 1994 | 132,903 | | 1993 | 132,172 | | 1992 | 131,972 | | 1991 | 132,269 | | 1990 | 132,661 | | 1989 | 131,214 | | 1988 | 128,002 | | 1987 | 124,203 | | 1986 | 120,098 | | 1985 | 116,013 | | 1984 | 115,191 | | 1983 | 117,773 | | 1982 | 120,898 | | 1981 | 123,620 | | 1980 | 126,005 | | 1979 | 127,259 | | 1978 | 127,175 | | 1977 | 126,687 | | 1976 | 126,130 | | 1975 | 125,360 | | 1974 | 123,704 | | 1973 | 121,488 | | 1972 | 119,337 | | 1971 | 117,443 | | 1970 | 115,098 | | 1969 | 112,714 | | 1968 | 110,226 | | 1967 | 107,174 | | 1966 | 103,955 | | 1965 | 101,118 | | 1964 | 98,241 | | 1963 | 95,728 | | 1962 | 93,608 | | 1961 | 91,186 | | 1960 | 88,678 |
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