| Year | Value | | 2020 | -9.1291226193465 | | 2019 | 0.22120065832556 | | 2018 | -1.7668045065389 | | 2017 | 5.8855792274652 | | 2016 | 1.1201770557439 | | 2015 | -8.3722196479469 | | 2014 | 6.1641473767301 | | 2013 | 6.3292114549747 | | 2012 | 8.0027593189544 | | 2011 | 17.052431103776 | | 2010 | 0.28486462348687 | | 2009 | -16.553749040473 | | 2008 | 6.6576009968617 | | 2007 | 7.3310343885236 | | 2006 | 16.615572688232 | | 2005 | 6.9936962699849 | | 2004 | 9.5448154035954 | | 2003 | 5.7318430432731 | | 2002 | 0.99150722691147 |
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