| Year | Value | | 2022 | 1,387,389,534 | | 2021 | 1,367,407,317 | | 2020 | 1,339,792,116 | | 2019 | 1,339,679,923 | | 2018 | 1,315,560,848 | | 2017 | 1,294,742,194 | | 2016 | 1,277,433,074 | | 2015 | 1,259,335,140.01 | | 2014 | 1,247,552,150 | | 2013 | 1,228,472,309 | | 2012 | 1,204,120,782 | | 2011 | 1,172,379,834 | | 2010 | 1,128,765,196 | | 2009 | 1,115,506,057 | | 2008 | 1,088,508,290 | | 2007 | 1,041,679,548 | | 2006 | 953,391,612 | | 2005 | 859,274,862 | | 2004 | 768,990,736 | | 2003 | 691,017,299 | | 2002 | 627,827,297 | | 2001 | 573,516,615 | | 2000 | 486,257,243 | | 1999 | 349,606,380 | | 1998 | 241,144,497 | | 1997 | 169,571,129 | | 1996 | 120,077,396 | | 1995 | 76,651,544 | | 1994 | 48,246,516 | | 1993 | 30,340,195 | | 1992 | 21,115,677 | | 1991 | 15,143,921 | | 1990 | 10,627,282 | | 1989 | 7,080,711 | | 1988 | 4,196,576 | | 1987 | 2,463,662 | | 1986 | 1,408,704 | | 1985 | 740,324 | | 1984 | 312,566 | | 1983 | 145,291 | | 1982 | 99,179 | | 1981 | 63,585 | | 1980 | 23,482 |
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