| Year | Value | | 2022 | 150,434 | | 2021 | 149,062 | | 2020 | 147,837 | | 2019 | 146,948 | | 2018 | 145,537 | | 2017 | 143,628 | | 2016 | 141,709 | | 2015 | 139,045 | | 2014 | 135,752 | | 2013 | 132,014 | | 2012 | 127,936 | | 2011 | 121,353 | | 2010 | 114,314 | | 2009 | 109,622 | | 2008 | 104,933 | | 2007 | 99,414 | | 2006 | 93,321 | | 2005 | 86,836 | | 2004 | 81,387 | | 2003 | 78,698 | | 2002 | 76,593 | | 2001 | 73,445 | | 2000 | 70,461 | | 1999 | 67,389 | | 1998 | 63,580 | | 1997 | 57,456 | | 1996 | 53,434 | | 1995 | 52,485 | | 1994 | 52,750 | | 1993 | 53,699 | | 1992 | 52,460 | | 1991 | 50,315 | | 1990 | 57,918 | | 1989 | 65,637 | | 1988 | 63,954 | | 1987 | 63,039 | | 1986 | 62,541 | | 1985 | 62,270 | | 1984 | 62,595 | | 1983 | 62,128 | | 1982 | 60,723 | | 1981 | 59,448 | | 1980 | 57,646 | | 1979 | 55,527 | | 1978 | 53,269 | | 1977 | 50,915 | | 1976 | 48,725 | | 1975 | 46,641 | | 1974 | 44,881 | | 1973 | 43,549 | | 1972 | 42,290 | | 1971 | 41,081 | | 1970 | 39,993 | | 1969 | 39,038 | | 1968 | 38,169 | | 1967 | 37,395 | | 1966 | 36,664 | | 1965 | 35,967 | | 1964 | 35,302 | | 1963 | 34,645 | | 1962 | 33,840 | | 1961 | 32,850 | | 1960 | 31,801 |
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