| Year | Value | | 2021 | 105.2188067166 | | 2020 | 103.10149708468 | | 2019 | 100.5346018428 | | 2018 | 102.39103313833 | | 2017 | 101.81675559135 | | 2016 | 101.45605811206 | | 2015 | 99.547424489338 | | 2014 | 98.981236234831 | | 2013 | 96.941599323455 | | 2012 | 98.405937821067 | | 2011 | 101.49740979876 | | 2010 | 100 | | 2009 | 104.05778580955 | | 2008 | 94.756110199802 | | 2007 | 83.364076135374 | | 2006 | 80.473064154664 |
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