Year | Value | 2023 | 26,003,385 | 2022 | 25,770,913 | 2021 | 25,983,568 | 2020 | 25,219,253 | 2019 | 25,072,923 | 2018 | 24,812,159 | 2017 | 24,461,484 | 2016 | 24,079,276 | 2015 | 23,882,464 | 2014 | 23,488,075 | 2013 | 23,198,264 | 2012 | 23,071,179 | 2011 | 22,469,752 | 2010 | 21,906,084 | 2009 | 21,438,903 | 2008 | 20,141,224 | 2007 | 19,653,416 | 2006 | 19,464,939 | 2005 | 19,268,760 | 2004 | 19,248,116 | 2003 | 19,043,693 | 2002 | 18,395,453 | 2001 | 18,268,713 | 2000 | 17,858,301 | 1999 | 17,419,997 | 1998 | 17,179,755 | 1997 | 16,805,518 | 1996 | 16,364,411 | 1995 | 15,968,478 | 1994 | 15,502,313 | 1993 | 15,034,238 | 1992 | 14,593,760 | 1991 | 14,200,058 |
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