| Year | Value | | 2023 | 4,784,783 | | 2022 | 4,761,984 | | 2021 | 4,688,653 | | 2020 | 4,641,353 | | 2019 | 4,658,940 | | 2018 | 4,638,625 | | 2017 | 4,600,302 | | 2016 | 4,573,321 | | 2015 | 4,490,374 | | 2014 | 4,438,256 | | 2013 | 4,414,478 | | 2012 | 4,371,757 | | 2011 | 4,323,161 | | 2010 | 4,294,774 | | 2009 | 4,278,874 | | 2008 | 4,236,995 | | 2007 | 4,193,552 | | 2006 | 4,106,995 | | 2005 | 4,039,517 | | 2004 | 3,973,072 | | 2003 | 4,014,293 | | 2002 | 3,973,267 | | 2001 | 3,895,879 | | 2000 | 3,901,800 | | 1999 | 3,902,046 | | 1998 | 3,877,122 | | 1997 | 3,837,968 | | 1996 | 3,852,167 | | 1995 | 3,882,088 | | 1994 | 3,851,283 | | 1993 | 3,684,501 | | 1992 | 3,652,067 | | 1991 | 3,569,407 |
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