| Year | Value | | 2021 | 5.8055218390742 | | 2020 | -10.077803917605 | | 2019 | -11.232226602569 | | 2018 | 196.38288518075 | | 2017 | -62.229628353745 | | 2016 | -1.8143892887391 | | 2015 | 12.732381604176 | | 2014 | 0.5999912453228 | | 2013 | 6.8041150691395 | | 2012 | 24.746913227681 | | 2011 | 3.9329369625519 | | 2010 | 13.83360609689 |
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