Year | Value | 2022 | 333,241 | 2021 | 328,726 | 2020 | 326,337 | 2019 | 322,631 | 2018 | 320,798 | 2017 | 321,227 | 2016 | 322,198 | 2015 | 322,569 | 2014 | 320,706 | 2013 | 314,491 | 2012 | 302,082 | 2011 | 285,538 | 2010 | 274,189 | 2009 | 272,549 | 2008 | 278,736 | 2007 | 291,383 | 2006 | 305,543 | 2005 | 315,403 | 2004 | 320,915 | 2003 | 324,278 | 2002 | 326,485 | 2001 | 327,578 | 2000 | 326,677 | 1999 | 324,563 | 1998 | 321,507 | 1997 | 316,729 | 1996 | 310,492 | 1995 | 303,257 | 1994 | 294,870 | 1993 | 284,413 | 1992 | 272,228 | 1991 | 259,287 | 1990 | 245,437 | 1989 | 232,979 | 1988 | 223,655 | 1987 | 216,885 | 1986 | 212,522 | 1985 | 210,930 | 1984 | 212,228 | 1983 | 215,706 | 1982 | 220,690 | 1981 | 226,359 | 1980 | 230,507 | 1979 | 232,209 | 1978 | 230,875 | 1977 | 227,281 | 1976 | 221,984 | 1975 | 215,451 | 1974 | 210,427 | 1973 | 207,129 | 1972 | 204,257 | 1971 | 201,166 | 1970 | 197,804 | 1969 | 194,069 | 1968 | 189,483 | 1967 | 183,191 | 1966 | 175,139 | 1965 | 166,037 | 1964 | 156,640 | 1963 | 147,198 | 1962 | 138,505 | 1961 | 131,490 | 1960 | 127,084 |
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