| Year | Value | | 2022 | 26,415,114 | | 2021 | 26,571,823 | | 2020 | 25,068,249 | | 2019 | 25,051,668 | | 2018 | 25,178,981 | | 2017 | 23,013,147 | | 2016 | 23,302,603 | | 2015 | 23,206,353 | | 2014 | 23,680,718 | | 2013 | 23,661,339 | | 2012 | 23,940,973 | | 2011 | 22,315,248 | | 2010 | 19,852,242 | | 2009 | 16,450,223 | | 2008 | 14,796,593 | | 2007 | 13,955,202 | | 2006 | 12,450,801 | | 2005 | 10,569,572 | | 2004 | 9,261,385 | | 2003 | 7,268,281 | | 2002 | 6,244,310 | | 2001 | 5,100,783 | | 2000 | 3,401,525 | | 1999 | 2,260,687 | | 1998 | 964,248 | | 1997 | 409,740 | | 1996 | 319,474 | | 1995 | 197,314 | | 1994 | 115,691 | | 1993 | 85,186 | | 1992 | 64,438 | | 1991 | 36,136 | | 1990 | 13,921 | | 1989 | 4,886 |
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