Year | Value | 2023 | 27,117,726 | 2022 | 26,918,717 | 2021 | 26,552,673 | 2020 | 26,155,063 | 2019 | 26,858,844 | 2018 | 26,548,908 | 2017 | 26,619,160 | 2016 | 26,495,495 | 2015 | 26,386,335 | 2014 | 26,152,801 | 2013 | 25,830,936 | 2012 | 25,196,395 | 2011 | 24,791,816 | 2010 | 24,427,893 | 2009 | 24,004,781 | 2008 | 23,433,782 | 2007 | 22,864,170 | 2006 | 22,143,176 | 2005 | 21,425,603 | 2004 | 20,715,110 | 2003 | 20,575,914 | 2002 | 20,328,355 | 2001 | 20,058,310 | 2000 | 19,420,629 | 1999 | 19,405,554 | 1998 | 18,872,046 | 1997 | 18,504,453 | 1996 | 18,466,334 | 1995 | 18,080,127 | 1994 | 17,710,745 | 1993 | 17,343,243 | 1992 | 16,974,113 | 1991 | 16,620,122 |
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