| Year | Value | | 2024 | 1,819,366 | | 2023 | 1,749,708 | | 2022 | 1,690,034 | | 2021 | 1,641,213 | | 2020 | 1,576,589 | | 2019 | 1,499,563 | | 2018 | 1,428,914 | | 2017 | 1,363,198 | | 2016 | 1,302,041 | | 2015 | 1,247,168 | | 2014 | 1,187,698 | | 2013 | 1,125,791 | | 2012 | 1,072,188 | | 2011 | 1,018,620 | | 2010 | 976,291 | | 2009 | 948,032 | | 2008 | 916,956 | | 2007 | 901,410 | | 2006 | 888,406 | | 2005 | 854,992 | | 2004 | 827,053 | | 2003 | 799,610 | | 2002 | 752,522 | | 2001 | 713,852 | | 2000 | 707,551 | | 1999 | 696,983 | | 1998 | 669,005 | | 1997 | 641,374 | | 1996 | 613,728 | | 1995 | 585,565 | | 1994 | 553,721 | | 1993 | 505,411 | | 1992 | 446,211 | | 1991 | 409,307 | | 1990 | 401,136 | | 1989 | 394,383 | | 1988 | 382,449 | | 1987 | 378,949 | | 1986 | 382,200 | | 1985 | 386,120 | | 1984 | 382,737 | | 1983 | 376,895 | | 1982 | 381,904 | | 1981 | 416,728 | | 1980 | 460,766 | | 1979 | 479,745 | | 1978 | 480,927 | | 1977 | 475,502 | | 1976 | 472,287 | | 1975 | 470,123 |
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