Year % 2007 82.0087 2008 87.7316 2009 79.7082 2010 70.2447 2011 72.0281 2012 91.0232 2013 88.6834 2014 92.9152 2015 88.2468 2016 92.112 2017 110.9968 2018 95.3066 2019 99.7983