| Year | Value | | 2023 | 227,798 | | 2022 | 225,294 | | 2021 | 220,478 | | 2020 | 217,415 | | 2019 | 216,668 | | 2018 | 218,003 | | 2017 | 206,363 | | 2016 | 205,465 | | 2015 | 204,352 | | 2014 | 203,072 | | 2013 | 201,720 | | 2012 | 200,259 | | 2011 | 198,598 | | 2010 | 195,182 | | 2009 | 191,393 | | 2008 | 187,518 | | 2007 | 183,516 | | 2006 | 179,379 | | 2005 | 175,084 | | 2004 | 170,625 | | 2003 | 166,039 | | 2002 | 161,368 | | 2001 | 156,664 | | 2000 | 151,139 | | 1999 | 145,756 | | 1998 | 140,561 | | 1997 | 135,638 | | 1996 | 131,083 | | 1995 | 126,936 | | 1994 | 123,167 | | 1993 | 119,729 | | 1992 | 116,591 | | 1991 | 113,338 |
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