Year | Value | 2021 | 80.943181985755 | 2020 | 79.016000039665 | 2019 | 78.836341443893 | 2018 | 79.126351957131 | 2017 | 79.207494861622 | 2016 | 79.810905578999 | 2015 | 83.91142989687 | 2014 | 87.544981505862 | 2013 | 90.414801551776 | 2012 | 88.28234048887 | 2011 | 90.542669007293 | 2010 | 90.006392953545 | 2009 | 92.082755773144 | 2008 | 93.116547756403 | 2007 | 92.06437337209 | 2006 | 90.94933801111 | 2005 | 93.428347351056 | 2004 | 93.262934232097 | 2003 | 92.3504664706 |
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