| Year | Value | | 2023 | 988,727 | | 2022 | 968,424 | | 2021 | 938,865 | | 2020 | 915,520 | | 2019 | 918,680 | | 2018 | 903,161 | | 2017 | 899,482 | | 2016 | 895,063 | | 2015 | 881,284 | | 2014 | 867,194 | | 2013 | 862,767 | | 2012 | 789,420 | | 2011 | 771,227 | | 2010 | 753,051 | | 2009 | 734,219 | | 2008 | 714,935 | | 2007 | 695,564 | | 2006 | 676,327 | | 2005 | 657,389 | | 2004 | 639,729 | | 2003 | 623,518 | | 2002 | 607,423 | | 2001 | 590,864 | | 2000 | 573,965 | | 1999 | 557,724 | | 1998 | 541,608 | | 1997 | 525,672 | | 1996 | 516,621 | | 1995 | 506,738 | | 1994 | 496,324 | | 1993 | 481,536 | | 1992 | 466,715 | | 1991 | 452,284 |
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