| Year | Value | | 2023 | 6,217,544 | | 2022 | 6,004,722 | | 2021 | 5,663,087 | | 2020 | 5,205,106 | | 2019 | 5,540,191 | | 2018 | 6,307,584 | | 2017 | 7,445,994 | | 2016 | 7,583,240 | | 2015 | 7,352,790 | | 2014 | 7,316,420 | | 2013 | 7,108,752 | | 2012 | 6,796,953 | | 2011 | 6,656,256 | | 2010 | 6,700,922 | | 2009 | 6,480,101 | | 2008 | 6,055,224 | | 2007 | 6,306,477 | | 2006 | 5,614,445 | | 2005 | 5,273,243 | | 2004 | 4,944,602 | | 2003 | 4,628,242 | | 2002 | 4,325,364 | | 2001 | 4,698,736 | | 2000 | 4,582,382 | | 1999 | 4,476,652 | | 1998 | 4,176,680 | | 1997 | 4,196,934 | | 1996 | 4,216,603 | | 1995 | 4,236,137 | | 1994 | 4,376,625 | | 1993 | 4,106,009 | | 1992 | 4,118,971 | | 1991 | 3,870,037 |
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