Year | Value | 2023 | 35,111,887 | 2022 | 34,630,319 | 2021 | 33,070,239 | 2020 | 31,361,351 | 2019 | 33,249,207 | 2018 | 32,874,112 | 2017 | 32,167,323 | 2016 | 31,174,275 | 2015 | 30,216,096 | 2014 | 29,245,699 | 2013 | 28,576,887 | 2012 | 27,535,298 | 2011 | 26,981,022 | 2010 | 25,794,958 | 2009 | 24,694,136 | 2008 | 23,770,341 | 2007 | 23,018,367 | 2006 | 22,701,823 | 2005 | 22,722,966 | 2004 | 22,213,390 | 2003 | 22,701,681 | 2002 | 22,818,051 | 2001 | 22,462,109 | 2000 | 22,052,875 | 1999 | 22,791,604 | 1998 | 22,359,924 | 1997 | 21,780,014 | 1996 | 21,777,881 | 1995 | 21,438,138 | 1994 | 21,126,841 | 1993 | 19,657,574 | 1992 | 20,579,200 | 1991 | 20,423,991 |
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