| Year | Value | | 2023 | 255,564 | | 2022 | 249,967 | | 2021 | 240,479 | | 2020 | 235,554 | | 2019 | 234,947 | | 2018 | 230,329 | | 2017 | 225,672 | | 2016 | 220,911 | | 2015 | 215,965 | | 2014 | 211,481 | | 2013 | 207,030 | | 2012 | 202,701 | | 2011 | 198,551 | | 2010 | 194,539 | | 2009 | 191,254 | | 2008 | 188,013 | | 2007 | 184,940 | | 2006 | 181,791 | | 2005 | 179,409 | | 2004 | 177,549 | | 2003 | 176,043 | | 2002 | 172,932 | | 2001 | 167,547 | | 2000 | 161,820 | | 1999 | 156,527 | | 1998 | 150,158 | | 1997 | 142,601 | | 1996 | 136,443 | | 1995 | 133,087 | | 1994 | 131,590 | | 1993 | 129,116 | | 1992 | 131,808 | | 1991 | 132,851 |
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