Year | Value | 2021 | 19,957.147930238 | 2020 | 17,108.310663423 | 2019 | 16,457.095734565 | 2018 | 16,199.395139379 | 2017 | 14,132.88299397 | 2016 | 12,474.145427362 | 2015 | 11,842.932740994 | 2014 | 14,168.397866827 | 2013 | 13,291.952245021 | 2012 | 12,013.395374029 | 2011 | 12,036.580423633 | 2010 | 10,178.364919209 | 2009 | 10,330.119094544 | 2008 | 12,654.526642936 | 2007 | 10,359.426049863 | 2006 | 7,914.2003642482 | 2005 | 6,739.6821554576 | 2004 | 5,670.2705741579 | 2003 | 4,627.5673792242 | 2002 | 3,519.7092670604 | 2001 | 2,951.4262364303 | 2000 | 2,714.0496488599 | 1999 | 2,540.9574476808 | 1998 | 2,609.4757400825 | 1997 | 2,302.5058387361 | 1996 | 1,854.339194745 | 1995 | 1,677.0161513556 |
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