Year | Value | 2022 | 604,643 | 2021 | 581,929 | 2020 | 574,020 | 2019 | 567,087 | 2018 | 559,079 | 2017 | 550,873 | 2016 | 544,209 | 2015 | 538,391 | 2014 | 532,072 | 2013 | 524,782 | 2012 | 516,624 | 2011 | 508,055 | 2010 | 500,662 | 2009 | 497,106 | 2008 | 495,868 | 2007 | 500,058 | 2006 | 510,730 | 2005 | 521,621 | 2004 | 530,006 | 2003 | 533,414 | 2002 | 531,033 | 2001 | 523,098 | 2000 | 511,366 | 1999 | 498,029 | 1998 | 489,060 | 1997 | 486,784 | 1996 | 485,412 | 1995 | 485,696 | 1994 | 490,149 | 1993 | 489,296 | 1992 | 476,429 | 1991 | 452,029 | 1990 | 415,072 | 1989 | 372,961 | 1988 | 334,753 | 1987 | 294,256 | 1986 | 271,863 | 1985 | 282,691 | 1984 | 326,836 | 1983 | 382,062 | 1982 | 429,018 | 1981 | 461,734 | 1980 | 478,521 | 1979 | 472,656 | 1978 | 446,332 | 1977 | 408,562 | 1976 | 373,351 | 1975 | 353,499 | 1974 | 351,364 | 1973 | 364,979 | 1972 | 387,714 | 1971 | 405,089 | 1970 | 403,806 | 1969 | 382,557 | 1968 | 347,730 | 1967 | 304,842 | 1966 | 262,571 | 1965 | 227,723 | 1964 | 201,789 | 1963 | 183,893 | 1962 | 174,401 | 1961 | 169,210 | 1960 | 166,795 |
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