| Year | Value | | 2022 | 76.332192936562 | | 2021 | 79.828277434028 | | 2020 | 89.248520356782 | | 2019 | 81.725590238213 | | 2018 | 71.91511554652 | | 2017 | 70.670331170267 | | 2016 | 73.076418232709 | | 2015 | 60.859658620062 | | 2014 | 43.743321300042 | | 2013 | 41.278606443362 | | 2012 | 31.717295928415 | | 2011 | 32.137450055624 | | 2010 | 35.095059111457 | | 2009 | 34.134831584182 | | 2008 | 22.69755442805 | | 2007 | 27.255294572672 | | 2006 | 27.380356933615 | | 2005 | 16.712956724987 |
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