| Year | Value | | 2023 | 4,898,599 | | 2022 | 4,599,935 | | 2021 | 4,390,233 | | 2020 | 4,549,523 | | 2019 | 5,508,200 | | 2018 | 5,608,930 | | 2017 | 5,513,256 | | 2016 | 5,060,967 | | 2015 | 4,412,840 | | 2014 | 3,922,114 | | 2013 | 3,975,398 | | 2012 | 4,354,245 | | 2011 | 3,993,084 | | 2010 | 4,367,090 | | 2009 | 4,447,011 | | 2008 | 4,097,647 | | 2007 | 4,609,634 | | 2006 | 4,762,327 | | 2005 | 4,785,667 | | 2004 | 4,375,965 | | 2003 | 3,988,650 | | 2002 | 3,649,484 | | 2001 | 3,320,774 | | 2000 | 2,983,076 | | 1999 | 2,673,766 | | 1998 | 2,393,393 | | 1997 | 2,139,981 | | 1996 | 1,918,463 | | 1995 | 1,827,913 | | 1994 | 1,748,824 | | 1993 | 1,710,490 | | 1992 | 1,677,930 | | 1991 | 1,609,448 |
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