Year | Value | 2023 | 34,673,438 | 2022 | 34,376,365 | 2021 | 34,311,328 | 2020 | 34,633,314 | 2019 | 34,695,933 | 2018 | 34,415,434 | 2017 | 34,128,763 | 2016 | 33,939,706 | 2015 | 33,614,102 | 2014 | 33,331,376 | 2013 | 33,061,439 | 2012 | 32,778,349 | 2011 | 32,478,068 | 2010 | 32,236,187 | 2009 | 32,084,960 | 2008 | 31,927,772 | 2007 | 31,527,354 | 2006 | 31,317,980 | 2005 | 30,813,208 | 2004 | 30,341,589 | 2003 | 30,095,093 | 2002 | 29,839,231 | 2001 | 29,521,902 | 2000 | 29,511,805 | 1999 | 29,238,964 | 1998 | 29,150,168 | 1997 | 29,090,800 | 1996 | 28,921,109 | 1995 | 28,774,443 | 1994 | 28,764,405 | 1993 | 28,773,930 | 1992 | 28,980,864 | 1991 | 29,083,861 |
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