| Year | Value | | 2021 | 4,913.9055632154 | | 2020 | 6,770.9509651369 | | 2019 | 8,909.4845068984 | | 2018 | 9,974.2945710769 | | 2017 | 9,226.1092453387 | | 2016 | 7,078.6234013208 | | 2015 | 7,013.9902212926 | | 2014 | 8,094.5937277366 | | 2013 | 9,656.6969400258 | | 2012 | 11,144.717745383 | | 2011 | 6,730.2788389815 | | 2010 | 8,548.3750027723 | | 2009 | 7,201.2146090719 | | 2008 | 9,809.5400934792 | | 2007 | 8,280.8650904754 | | 2006 | 7,058.646985048 | | 2005 | 5,584.3910519277 | | 2004 | 4,120.3137463169 | | 2003 | 3,640.5731531227 | | 2002 | 2,862.970213301 |
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