Year | Value | 2022 | 286,579 | 2021 | 289,719 | 2020 | 292,427 | 2019 | 292,439 | 2018 | 290,716 | 2017 | 288,373 | 2016 | 285,707 | 2015 | 283,099 | 2014 | 282,102 | 2013 | 283,065 | 2012 | 285,508 | 2011 | 288,535 | 2010 | 289,300 | 2009 | 290,636 | 2008 | 295,814 | 2007 | 301,620 | 2006 | 307,522 | 2005 | 316,461 | 2004 | 326,985 | 2003 | 337,510 | 2002 | 350,029 | 2001 | 363,529 | 2000 | 377,477 | 1999 | 390,292 | 1998 | 398,261 | 1997 | 401,338 | 1996 | 402,447 | 1995 | 401,231 | 1994 | 398,418 | 1993 | 396,151 | 1992 | 394,623 | 1991 | 394,002 | 1990 | 393,468 | 1989 | 394,307 | 1988 | 397,724 | 1987 | 401,355 | 1986 | 401,794 | 1985 | 397,930 | 1984 | 390,962 | 1983 | 380,915 | 1982 | 367,216 | 1981 | 351,016 | 1980 | 333,313 | 1979 | 318,072 | 1978 | 306,529 | 1977 | 299,935 | 1976 | 299,334 | 1975 | 302,266 | 1974 | 306,608 | 1973 | 310,567 | 1972 | 311,969 | 1971 | 308,266 | 1970 | 300,974 | 1969 | 295,063 | 1968 | 292,250 | 1967 | 292,315 | 1966 | 296,475 | 1965 | 303,201 | 1964 | 308,216 | 1963 | 310,032 | 1962 | 310,946 | 1961 | 313,029 | 1960 | 319,400 |
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