Year | Value | 2022 | 336,920 | 2021 | 323,902 | 2020 | 321,102 | 2019 | 317,841 | 2018 | 312,789 | 2017 | 310,891 | 2016 | 314,239 | 2015 | 321,269 | 2014 | 334,007 | 2013 | 352,893 | 2012 | 373,041 | 2011 | 402,458 | 2010 | 428,315 | 2009 | 438,984 | 2008 | 437,045 | 2007 | 425,680 | 2006 | 410,380 | 2005 | 391,901 | 2004 | 374,727 | 2003 | 366,540 | 2002 | 364,658 | 2001 | 358,868 | 2000 | 348,999 | 1999 | 337,515 | 1998 | 325,578 | 1997 | 314,128 | 1996 | 307,994 | 1995 | 309,614 | 1994 | 314,918 | 1993 | 322,933 | 1992 | 335,639 | 1991 | 353,742 | 1990 | 376,561 | 1989 | 408,579 | 1988 | 438,383 | 1987 | 451,426 | 1986 | 452,879 | 1985 | 447,121 | 1984 | 434,367 | 1983 | 420,714 | 1982 | 414,357 | 1981 | 406,093 | 1980 | 390,316 | 1979 | 379,547 | 1978 | 373,031 | 1977 | 365,414 | 1976 | 362,511 | 1975 | 364,170 | 1974 | 359,726 | 1973 | 350,460 | 1972 | 342,360 | 1971 | 334,398 | 1970 | 328,737 | 1969 | 326,462 | 1968 | 328,431 | 1967 | 333,428 | 1966 | 340,149 | 1965 | 347,940 | 1964 | 354,853 | 1963 | 359,517 | 1962 | 362,306 | 1961 | 364,636 | 1960 | 366,876 |
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