| Year | Value | | 2022 | 11,873,986 | | 2021 | 11,740,118 | | 2020 | 11,529,728 | | 2019 | 11,509,573 | | 2018 | 11,447,351 | | 2017 | 11,357,286 | | 2016 | 12,550,821 | | 2015 | 12,774,090 | | 2014 | 12,734,724 | | 2013 | 12,315,217 | | 2012 | 12,313,375 | | 2011 | 12,495,934 | | 2010 | 12,154,041 | | 2009 | 11,775,240 | | 2008 | 11,341,704 | | 2007 | 10,738,121 | | 2006 | 9,847,375 | | 2005 | 9,604,695 | | 2004 | 9,131,705 | | 2003 | 8,605,834 | | 2002 | 8,101,777 | | 2001 | 7,697,000 | | 2000 | 5,629,000 | | 1999 | 3,186,602 | | 1998 | 1,756,287 | | 1997 | 974,494 | | 1996 | 478,172 | | 1995 | 235,258 | | 1994 | 128,071 | | 1993 | 67,771 | | 1992 | 61,460 | | 1991 | 51,420 | | 1990 | 42,880 | | 1989 | 30,791 | | 1988 | 19,154 | | 1987 | 7,223 | | 1986 | 3,798 |
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