Year | Value | 2023 | 504,169,017 | 2022 | 502,821,373 | 2021 | 500,212,933 | 2020 | 489,575,014 | 2019 | 497,161,261 | 2018 | 494,238,462 | 2017 | 491,271,718 | 2016 | 490,158,564 | 2015 | 488,379,373 | 2014 | 485,708,323 | 2013 | 482,573,513 | 2012 | 481,069,709 | 2011 | 478,069,281 | 2010 | 472,649,867 | 2009 | 471,897,523 | 2008 | 471,128,070 | 2007 | 469,631,293 | 2006 | 464,107,356 | 2005 | 461,015,049 | 2004 | 457,110,517 | 2003 | 453,818,291 | 2002 | 449,658,909 | 2001 | 446,446,866 | 2000 | 442,909,197 | 1999 | 436,621,493 | 1998 | 430,387,903 | 1997 | 422,914,367 | 1996 | 416,580,454 | 1995 | 409,803,158 | 1994 | 403,355,618 | 1993 | 396,531,723 | 1992 | 391,509,711 | 1991 | 385,321,740 |
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