| Year | Value | | 2022 | 216,601 | | 2021 | 203,476 | | 2020 | 192,019 | | 2019 | 182,126 | | 2018 | 173,960 | | 2017 | 167,423 | | 2016 | 162,146 | | 2015 | 157,783 | | 2014 | 153,958 | | 2013 | 150,217 | | 2012 | 146,440 | | 2011 | 142,747 | | 2010 | 139,101 | | 2009 | 135,525 | | 2008 | 132,304 | | 2007 | 129,625 | | 2006 | 127,334 | | 2005 | 125,360 | | 2004 | 124,608 | | 2003 | 125,053 | | 2002 | 126,873 | | 2001 | 130,279 | | 2000 | 134,122 | | 1999 | 137,013 | | 1998 | 138,560 | | 1997 | 138,485 | | 1996 | 136,672 | | 1995 | 134,303 | | 1994 | 134,792 | | 1993 | 136,850 | | 1992 | 135,291 | | 1991 | 131,624 | | 1990 | 127,567 | | 1989 | 122,330 | | 1988 | 116,269 | | 1987 | 111,015 | | 1986 | 107,057 | | 1985 | 103,476 | | 1984 | 99,892 | | 1983 | 96,319 | | 1982 | 92,825 | | 1981 | 89,494 | | 1980 | 86,375 | | 1979 | 83,419 | | 1978 | 80,511 | | 1977 | 77,728 | | 1976 | 75,411 | | 1975 | 73,815 | | 1974 | 72,884 | | 1973 | 72,657 | | 1972 | 72,792 | | 1971 | 72,495 | | 1970 | 71,248 | | 1969 | 69,091 | | 1968 | 66,076 | | 1967 | 62,362 | | 1966 | 58,620 | | 1965 | 55,286 | | 1964 | 52,245 | | 1963 | 49,372 | | 1962 | 46,887 | | 1961 | 44,896 | | 1960 | 43,488 |
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