| Year | Value | | 2021 | 928.78597149646 | | 2020 | 869.16882925702 | | 2019 | 909.46443337457 | | 2018 | 897.03345686423 | | 2017 | 913.40443124236 | | 2016 | 856.22158455838 | | 2015 | 1,044.2625194085 | | 2014 | 1,183.3769544163 | | 2013 | 1,132.0129567219 | | 2012 | 1,041.7510423695 | | 2011 | 887.75629365598 | | 2010 | 770.897170832 | | 2009 | 743.97524657016 | | 2008 | 838.81354752913 | | 2007 | 610.90994766223 | | 2006 | 436.83442645464 | | 2005 | 309.92683292848 | | 2004 | 241.17110443986 |
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