| Year | Value | | 2022 | 3,896,159 | | 2021 | 3,661,176 | | 2020 | 3,494,700 | | 2019 | 3,371,969 | | 2018 | 3,330,286 | | 2017 | 3,389,402 | | 2016 | 3,252,176 | | 2015 | 3,204,993 | | 2014 | 3,208,824 | | 2013 | 3,085,146 | | 2012 | 3,049,697 | | 2011 | 3,108,372 | | 2010 | 2,933,988 | | 2009 | 2,712,220 | | 2008 | 2,543,587 | | 2007 | 2,431,512 | | 2006 | 2,198,845 | | 2005 | 1,993,465 | | 2004 | 1,847,927 | | 2003 | 1,709,062 | | 2002 | 1,646,932 | | 2001 | 1,628,161 | | 2000 | 1,318,099 | | 1999 | 813,800 | | 1998 | 580,000 | | 1997 | 367,000 | | 1996 | 329,000 | | 1995 | 287,000 | | 1994 | 175,000 | | 1993 | 95,000 | | 1992 | 60,000 | | 1991 | 33,410 | | 1990 | 20,369 | | 1989 | 11,600 | | 1988 | 8,700 | | 1987 | 3,917 |
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