| Year | Value | | 2023 | 6,882,832 | | 2022 | 6,663,004 | | 2021 | 6,334,868 | | 2020 | 6,237,915 | | 2019 | 6,104,306 | | 2018 | 5,898,001 | | 2017 | 5,692,713 | | 2016 | 5,483,245 | | 2015 | 5,273,905 | | 2014 | 5,882,886 | | 2013 | 5,777,525 | | 2012 | 5,677,003 | | 2011 | 5,582,610 | | 2010 | 5,491,295 | | 2009 | 5,329,984 | | 2008 | 5,171,424 | | 2007 | 5,016,910 | | 2006 | 4,868,070 | | 2005 | 4,730,371 | | 2004 | 4,614,959 | | 2003 | 4,517,995 | | 2002 | 4,427,905 | | 2001 | 4,342,810 | | 2000 | 4,261,847 | | 1999 | 4,185,293 | | 1998 | 4,005,653 | | 1997 | 3,836,888 | | 1996 | 3,677,384 | | 1995 | 3,522,972 | | 1994 | 3,366,403 | | 1993 | 3,239,391 | | 1992 | 3,117,326 | | 1991 | 3,007,050 |
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