| Year | Value | | 2022 | 1,824,853 | | 2021 | 1,807,358 | | 2020 | 1,801,668 | | 2019 | 1,801,817 | | 2018 | 1,812,029 | | 2017 | 1,805,749 | | 2016 | 1,775,541 | | 2015 | 1,737,206 | | 2014 | 1,697,922 | | 2013 | 1,646,717 | | 2012 | 1,593,289 | | 2011 | 1,542,161 | | 2010 | 1,487,888 | | 2009 | 1,434,522 | | 2008 | 1,384,409 | | 2007 | 1,336,252 | | 2006 | 1,287,816 | | 2005 | 1,241,901 | | 2004 | 1,198,424 | | 2003 | 1,156,556 | | 2002 | 1,114,312 | | 2001 | 1,069,660 | | 2000 | 1,030,393 | | 1999 | 1,004,076 | | 1998 | 984,402 | | 1997 | 961,547 | | 1996 | 938,883 | | 1995 | 914,496 | | 1994 | 885,796 | | 1993 | 855,904 | | 1992 | 824,477 | | 1991 | 793,493 | | 1990 | 762,977 | | 1989 | 731,274 | | 1988 | 700,590 | | 1987 | 669,521 | | 1986 | 639,759 | | 1985 | 611,410 | | 1984 | 582,530 | | 1983 | 554,551 | | 1982 | 525,432 | | 1981 | 498,298 | | 1980 | 470,137 | | 1979 | 445,987 | | 1978 | 431,934 | | 1977 | 418,841 | | 1976 | 404,227 | | 1975 | 388,952 | | 1974 | 378,320 | | 1973 | 370,843 | | 1972 | 360,813 | | 1971 | 351,914 | | 1970 | 342,576 | | 1969 | 330,806 | | 1968 | 319,245 | | 1967 | 307,007 | | 1966 | 296,524 | | 1965 | 286,689 | | 1964 | 277,362 | | 1963 | 270,715 | | 1962 | 266,179 | | 1961 | 259,697 | | 1960 | 251,022 |
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