| Year | Value | | 2023 | 8,366,090 | | 2022 | 8,071,869 | | 2021 | 7,724,172 | | 2020 | 7,444,101 | | 2019 | 7,191,761 | | 2018 | 6,896,854 | | 2017 | 6,618,516 | | 2016 | 6,490,270 | | 2015 | 6,368,179 | | 2014 | 6,251,150 | | 2013 | 6,139,893 | | 2012 | 6,035,605 | | 2011 | 5,937,747 | | 2010 | 5,880,939 | | 2009 | 5,824,618 | | 2008 | 5,769,964 | | 2007 | 5,711,029 | | 2006 | 5,646,652 | | 2005 | 5,581,621 | | 2004 | 5,444,518 | | 2003 | 5,314,368 | | 2002 | 5,191,809 | | 2001 | 5,073,138 | | 2000 | 4,953,193 | | 1999 | 4,835,964 | | 1998 | 4,721,243 | | 1997 | 4,609,803 | | 1996 | 4,497,995 | | 1995 | 4,386,058 | | 1994 | 4,380,625 | | 1993 | 4,434,480 | | 1992 | 4,375,410 | | 1991 | 4,255,128 |
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