Year % 2007 53.9373 2008 93.1531 2009 86.5577 2010 72.0438 2011 70.6289 2012 78.1987 2013 82.2521 2014 78.5629 2016 94.3826356442191 2017 96.3037939522589 2018 97.2643812879096