Year % 2010 3.17305056414187 2011 2.01496821504011 2012 4.35011884491608 2013 7.97676918024597 2014 10.1905320738466 2015 10.6112339715733 2016 11.2850858065096 2017 25.8360610272673 2018 23.2217366851526 2019 23.145468821214 2020 12.2238112230323 2021 14.9960876543918