Year | Value | 2022 | 560,722 | 2021 | 556,141 | 2020 | 530,771 | 2019 | 495,926 | 2018 | 467,604 | 2017 | 451,124 | 2016 | 443,020 | 2015 | 447,843 | 2014 | 463,855 | 2013 | 484,734 | 2012 | 508,907 | 2011 | 529,846 | 2010 | 541,328 | 2009 | 540,720 | 2008 | 534,370 | 2007 | 533,212 | 2006 | 531,573 | 2005 | 527,192 | 2004 | 524,928 | 2003 | 521,453 | 2002 | 516,463 | 2001 | 516,493 | 2000 | 514,898 | 1999 | 507,256 | 1998 | 500,020 | 1997 | 492,744 | 1996 | 485,698 | 1995 | 472,739 | 1994 | 453,851 | 1993 | 416,076 | 1992 | 360,126 | 1991 | 317,250 | 1990 | 295,366 | 1989 | 288,950 | 1988 | 314,814 | 1987 | 368,338 | 1986 | 410,449 | 1985 | 431,956 | 1984 | 438,222 | 1983 | 433,530 | 1982 | 423,045 | 1981 | 410,023 | 1980 | 397,865 | 1979 | 386,534 | 1978 | 377,181 | 1977 | 365,664 | 1976 | 353,553 | 1975 | 348,022 | 1974 | 340,747 | 1973 | 326,923 | 1972 | 314,211 | 1971 | 303,582 | 1970 | 291,530 | 1969 | 280,327 | 1968 | 273,032 | 1967 | 264,666 | 1966 | 254,894 | 1965 | 247,137 | 1964 | 241,098 | 1963 | 235,841 | 1962 | 231,493 | 1961 | 227,133 | 1960 | 222,215 |
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