Year | Value | 2021 | 4.2242551825137 | 2020 | -2.0794724025986 | 2019 | 2.704279108348 | 2018 | 4.9605377842829 | 2017 | 4.5083179989764 | 2016 | -1.1648290488739 | 2015 | -1.7150826928651 | 2014 | 0.98510850947326 | 2013 | 0.75551000457565 | 2012 | 3.5869848967005 | 2011 | 7.4132134827764 | 2010 | 8.064899941108 | 2009 | -11.021853516734 | 2008 | 5.7475912769711 | 2007 | 12.620340827297 | 2006 | 10.873941799746 | 2005 | 9.3123125789846 | 2004 | 11.576557779239 | 2003 | 6.038624903842 | 2002 | 3.7308000874234 | 2001 | 3.9286926371745 | 2000 | 12.978385868393 |
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