| Year | Value | | 2023 | 1,471,451 | | 2022 | 1,504,378 | | 2021 | 1,465,576 | | 2020 | 1,484,755 | | 2019 | 1,487,713 | | 2018 | 1,450,878 | | 2017 | 1,445,397 | | 2016 | 1,455,281 | | 2015 | 1,432,702 | | 2014 | 1,380,920 | | 2013 | 1,331,321 | | 2012 | 1,301,542 | | 2011 | 1,251,533 | | 2010 | 1,207,665 | | 2009 | 1,155,318 | | 2008 | 1,125,209 | | 2007 | 1,019,852 | | 2006 | 1,003,824 | | 2005 | 947,692 | | 2004 | 898,987 | | 2003 | 871,146 | | 2002 | 865,017 | | 2001 | 868,650 | | 2000 | 835,691 | | 1999 | 809,999 | | 1998 | 786,042 | | 1997 | 760,805 | | 1996 | 725,131 | | 1995 | 685,307 | | 1994 | 650,055 | | 1993 | 617,029 | | 1992 | 589,652 | | 1991 | 563,621 |
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