| Year | Value | | 2023 | 8,893,065 | | 2022 | 8,813,437 | | 2021 | 8,652,009 | | 2020 | 7,769,265 | | 2019 | 8,387,366 | | 2018 | 8,227,052 | | 2017 | 8,190,955 | | 2016 | 7,951,902 | | 2015 | 7,548,658 | | 2014 | 7,045,425 | | 2013 | 6,857,058 | | 2012 | 6,732,540 | | 2011 | 6,517,322 | | 2010 | 6,467,670 | | 2009 | 6,457,726 | | 2008 | 6,561,532 | | 2007 | 6,431,063 | | 2006 | 6,391,164 | | 2005 | 6,151,040 | | 2004 | 6,049,202 | | 2003 | 5,717,711 | | 2002 | 5,528,235 | | 2001 | 5,345,861 | | 2000 | 5,171,107 | | 1999 | 5,172,094 | | 1998 | 5,169,290 | | 1997 | 4,891,099 | | 1996 | 4,722,823 | | 1995 | 4,617,500 | | 1994 | 4,509,956 | | 1993 | 4,390,122 | | 1992 | 4,285,355 | | 1991 | 4,175,767 |
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