Year | Value | 2022 | 325,805 | 2021 | 317,674 | 2020 | 323,623 | 2019 | 325,752 | 2018 | 324,299 | 2017 | 321,716 | 2016 | 318,818 | 2015 | 316,445 | 2014 | 314,059 | 2013 | 311,912 | 2012 | 312,414 | 2011 | 332,015 | 2010 | 353,636 | 2009 | 364,811 | 2008 | 379,916 | 2007 | 395,622 | 2006 | 410,879 | 2005 | 425,484 | 2004 | 435,546 | 2003 | 433,715 | 2002 | 423,343 | 2001 | 408,619 | 2000 | 391,027 | 1999 | 375,245 | 1998 | 367,208 | 1997 | 364,828 | 1996 | 359,616 | 1995 | 350,642 | 1994 | 339,126 | 1993 | 327,002 | 1992 | 315,477 | 1991 | 309,483 | 1990 | 311,275 | 1989 | 320,300 | 1988 | 332,891 | 1987 | 347,184 | 1986 | 367,234 | 1985 | 392,672 | 1984 | 422,970 | 1983 | 449,406 | 1982 | 462,448 | 1981 | 463,491 | 1980 | 456,889 | 1979 | 443,427 | 1978 | 429,081 | 1977 | 421,799 | 1976 | 412,816 | 1975 | 396,908 | 1974 | 385,994 | 1973 | 378,972 | 1972 | 371,149 | 1971 | 368,099 | 1970 | 369,422 | 1969 | 364,444 | 1968 | 354,688 | 1967 | 346,024 | 1966 | 337,297 | 1965 | 330,863 | 1964 | 328,165 | 1963 | 330,083 | 1962 | 335,379 | 1961 | 342,482 | 1960 | 350,333 |
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