| Year | Value | | 2023 | 4,307,860 | | 2022 | 4,255,391 | | 2021 | 4,215,903 | | 2020 | 4,085,550 | | 2019 | 4,060,679 | | 2018 | 3,934,099 | | 2017 | 3,806,688 | | 2016 | 3,678,609 | | 2015 | 3,552,611 | | 2014 | 3,428,208 | | 2013 | 3,303,055 | | 2012 | 3,182,441 | | 2011 | 3,182,939 | | 2010 | 3,173,804 | | 2009 | 3,156,644 | | 2008 | 3,131,502 | | 2007 | 3,097,803 | | 2006 | 3,058,111 | | 2005 | 3,015,516 | | 2004 | 2,970,502 | | 2003 | 2,921,914 | | 2002 | 2,870,157 | | 2001 | 2,817,079 | | 2000 | 2,763,292 | | 1999 | 2,708,894 | | 1998 | 2,611,265 | | 1997 | 2,515,481 | | 1996 | 2,466,423 | | 1995 | 2,403,225 | | 1994 | 2,361,138 | | 1993 | 2,186,004 | | 1992 | 2,112,977 | | 1991 | 2,060,979 |
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