| Year | Value | | 2022 | 231,848 | | 2021 | 227,437 | | 2020 | 224,372 | | 2019 | 222,494 | | 2018 | 221,443 | | 2017 | 220,727 | | 2016 | 220,400 | | 2015 | 217,923 | | 2014 | 213,977 | | 2013 | 208,617 | | 2012 | 202,207 | | 2011 | 195,221 | | 2010 | 188,127 | | 2009 | 181,148 | | 2008 | 174,335 | | 2007 | 167,315 | | 2006 | 160,669 | | 2005 | 154,423 | | 2004 | 148,480 | | 2003 | 142,906 | | 2002 | 137,867 | | 2001 | 133,357 | | 2000 | 129,278 | | 1999 | 125,524 | | 1998 | 122,015 | | 1997 | 118,689 | | 1996 | 113,285 | | 1995 | 108,193 | | 1994 | 103,442 | | 1993 | 98,980 | | 1992 | 94,784 | | 1991 | 90,806 | | 1990 | 86,981 |
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