Year % 2005 5.03102650551527 2008 2.32821565494645 2009 4.78794997593851 2010 5.36854918034668 2011 5.30571463582038 2012 5.15691742164664 2013 5.15521654499405 2014 5.2026408246472 2015 4.70929220260798 2016 4.3455769187676 2017 3.62697846954925 2018 3.11539804225056 2019 2.95897371585084 2020 2.56788614282869 2021 2.1170420643996 2022 1.85551077468374