Year | Value | 2023 | 23,688,602 | 2022 | 22,845,926 | 2021 | 21,852,504 | 2020 | 20,199,033 | 2019 | 21,779,255 | 2018 | 20,781,526 | 2017 | 20,227,317 | 2016 | 20,064,429 | 2015 | 19,695,067 | 2014 | 19,150,428 | 2013 | 19,212,670 | 2012 | 18,857,659 | 2011 | 18,058,022 | 2010 | 17,543,376 | 2009 | 17,268,633 | 2008 | 16,761,909 | 2007 | 16,515,560 | 2006 | 16,055,132 | 2005 | 15,298,606 | 2004 | 14,602,428 | 2003 | 13,900,770 | 2002 | 13,383,914 | 2001 | 13,077,682 | 2000 | 13,009,195 | 1999 | 12,603,655 | 1998 | 12,557,822 | 1997 | 12,353,785 | 1996 | 11,451,818 | 1995 | 11,141,991 | 1994 | 10,495,841 | 1993 | 10,069,459 | 1992 | 9,564,022 | 1991 | 9,087,393 |
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