| Year | Value | | 2024 | 2,177,014 | | 2023 | 2,121,537 | | 2022 | 2,073,673 | | 2021 | 2,038,184 | | 2020 | 1,982,987 | | 2019 | 1,911,270 | | 2018 | 1,843,876 | | 2017 | 1,776,262 | | 2016 | 1,705,570 | | 2015 | 1,635,816 | | 2014 | 1,557,086 | | 2013 | 1,473,496 | | 2012 | 1,397,810 | | 2011 | 1,319,686 | | 2010 | 1,251,619 | | 2009 | 1,195,782 | | 2008 | 1,135,293 | | 2007 | 1,096,702 | | 2006 | 1,066,888 | | 2005 | 1,020,831 | | 2004 | 988,021 | | 2003 | 958,869 | | 2002 | 908,281 | | 2001 | 868,606 | | 2000 | 868,026 | | 1999 | 862,706 | | 1998 | 836,101 | | 1997 | 808,719 | | 1996 | 780,348 | | 1995 | 750,287 | | 1994 | 714,035 | | 1993 | 655,049 | | 1992 | 580,282 | | 1991 | 532,819 | | 1990 | 521,013 | | 1989 | 509,486 | | 1988 | 490,156 | | 1987 | 481,027 | | 1986 | 480,187 | | 1985 | 480,465 | | 1984 | 472,685 | | 1983 | 462,759 | | 1982 | 466,738 | | 1981 | 507,690 | | 1980 | 560,448 | | 1979 | 581,460 | | 1978 | 579,511 | | 1977 | 567,216 | | 1976 | 554,009 | | 1975 | 540,490 |
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