| Year | Value | | 2023 | 589,392 | | 2022 | 583,049 | | 2021 | 551,754 | | 2020 | 578,873 | | 2019 | 616,374 | | 2018 | 607,684 | | 2017 | 610,015 | | 2016 | 603,463 | | 2015 | 606,421 | | 2014 | 597,842 | | 2013 | 590,490 | | 2012 | 575,615 | | 2011 | 567,989 | | 2010 | 571,591 | | 2009 | 559,155 | | 2008 | 552,776 | | 2007 | 546,240 | | 2006 | 548,135 | | 2005 | 544,955 | | 2004 | 535,573 | | 2003 | 545,848 | | 2002 | 519,867 | | 2001 | 508,818 | | 2000 | 515,015 | | 1999 | 510,362 | | 1998 | 503,643 | | 1997 | 497,323 | | 1996 | 489,710 | | 1995 | 482,900 | | 1994 | 476,130 | | 1993 | 466,770 | | 1992 | 458,727 | | 1991 | 450,626 |
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