| Year | Value | | 2023 | 4,527,473 | | 2022 | 4,450,601 | | 2021 | 4,262,382 | | 2020 | 4,193,305 | | 2019 | 4,222,447 | | 2018 | 4,168,871 | | 2017 | 4,091,598 | | 2016 | 4,025,458 | | 2015 | 3,947,873 | | 2014 | 3,878,824 | | 2013 | 3,777,692 | | 2012 | 3,719,680 | | 2011 | 3,531,041 | | 2010 | 3,482,638 | | 2009 | 3,403,706 | | 2008 | 3,324,067 | | 2007 | 3,266,238 | | 2006 | 3,180,735 | | 2005 | 3,101,315 | | 2004 | 3,023,076 | | 2003 | 2,943,707 | | 2002 | 2,873,038 | | 2001 | 2,847,056 | | 2000 | 2,775,397 | | 1999 | 2,670,725 | | 1998 | 2,582,174 | | 1997 | 2,540,159 | | 1996 | 2,486,878 | | 1995 | 2,442,219 | | 1994 | 2,353,183 | | 1993 | 2,252,545 | | 1992 | 2,133,756 | | 1991 | 2,035,534 |
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