| Year | Value | | 2022 | 1,824,633 | | 2021 | 1,785,391 | | 2020 | 1,739,827 | | 2019 | 1,691,680 | | 2018 | 1,643,350 | | 2017 | 1,600,972 | | 2016 | 1,571,277 | | 2015 | 1,555,082 | | 2014 | 1,547,507 | | 2013 | 1,545,627 | | 2012 | 1,547,159 | | 2011 | 1,549,392 | | 2010 | 1,550,004 | | 2009 | 1,547,576 | | 2008 | 1,539,854 | | 2007 | 1,524,908 | | 2006 | 1,502,477 | | 2005 | 1,472,902 | | 2004 | 1,436,511 | | 2003 | 1,395,127 | | 2002 | 1,350,368 | | 2001 | 1,302,957 | | 2000 | 1,254,190 | | 1999 | 1,204,894 | | 1998 | 1,155,493 | | 1997 | 1,106,448 | | 1996 | 1,058,323 | | 1995 | 1,011,964 | | 1994 | 967,295 | | 1993 | 921,857 | | 1992 | 877,081 | | 1991 | 835,796 | | 1990 | 796,256 | | 1989 | 758,173 | | 1988 | 724,700 | | 1987 | 694,677 | | 1986 | 665,398 | | 1985 | 637,595 | | 1984 | 611,135 | | 1983 | 585,884 | | 1982 | 562,706 | | 1981 | 542,376 | | 1980 | 524,714 | | 1979 | 509,679 | | 1978 | 497,538 | | 1977 | 487,464 | | 1976 | 478,370 | | 1975 | 469,238 | | 1974 | 459,691 | | 1973 | 449,786 | | 1972 | 439,428 | | 1971 | 429,146 | | 1970 | 418,818 | | 1969 | 408,113 | | 1968 | 397,025 | | 1967 | 385,700 | | 1966 | 374,543 | | 1965 | 363,692 | | 1964 | 353,056 | | 1963 | 342,569 | | 1962 | 332,585 | | 1961 | 323,832 | | 1960 | 316,658 |
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