Year % 2010 4.29447852760736 2011 3.54430379746835 2012 6.03248259860789 2013 6.03248259860789 2014 5.59440559440559 2015 12.6934984520124 2016 9.93071593533487 2017 10.161662817552 2018 10.161662817552 2019 11.3163972286374 2020 16.8253968253968 2021 15.2941176470588