| Year | Value | | 2023 | 4,692,200 | | 2022 | 4,662,374 | | 2021 | 4,597,053 | | 2020 | 4,508,178 | | 2019 | 4,539,202 | | 2018 | 4,518,105 | | 2017 | 4,502,858 | | 2016 | 4,489,606 | | 2015 | 4,476,803 | | 2014 | 4,461,284 | | 2013 | 4,442,748 | | 2012 | 4,421,986 | | 2011 | 4,399,785 | | 2010 | 4,370,031 | | 2009 | 4,335,033 | | 2008 | 4,272,437 | | 2007 | 4,140,211 | | 2006 | 4,032,057 | | 2005 | 3,946,658 | | 2004 | 3,897,226 | | 2003 | 3,851,865 | | 2002 | 3,794,300 | | 2001 | 3,765,066 | | 2000 | 3,751,159 | | 1999 | 3,745,232 | | 1998 | 3,747,952 | | 1997 | 3,765,164 | | 1996 | 3,787,712 | | 1995 | 3,818,560 | | 1994 | 3,865,815 | | 1993 | 3,883,229 | | 1992 | 3,869,177 | | 1991 | 3,855,501 |
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