| Year | Value | | 2023 | 1,851,682 | | 2022 | 1,805,182 | | 2021 | 1,755,868 | | 2020 | 1,650,819 | | 2019 | 1,595,784 | | 2018 | 1,663,152 | | 2017 | 1,471,258 | | 2016 | 1,436,067 | | 2015 | 1,415,338 | | 2014 | 1,358,394 | | 2013 | 1,244,194 | | 2012 | 1,065,137 | | 2011 | 1,070,747 | | 2010 | 1,116,223 | | 2009 | 1,038,026 | | 2008 | 969,409 | | 2007 | 900,623 | | 2006 | 886,721 | | 2005 | 924,221 | | 2004 | 903,085 | | 2003 | 882,427 | | 2002 | 862,164 | | 2001 | 842,146 | | 2000 | 822,460 | | 1999 | 826,658 | | 1998 | 805,027 | | 1997 | 775,818 | | 1996 | 744,960 | | 1995 | 719,866 | | 1994 | 688,349 | | 1993 | 667,939 | | 1992 | 638,355 | | 1991 | 610,884 |
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