Year % 2005 0.3938731 2006 0.3938731 2010 7.219596 2011 7.219596 2012 7.219596 2015 10.53472 2016 9.903811 2017 10.47583 2018 10.47583 2019 8.423326 2020 8.423326 2021 8.423326