Year % 2010 6.08782854089517 2011 5.05854780225549 2012 5.99506688381505 2013 8.27382585661298 2014 19.8486775882401 2015 26.2569938097746 2016 47.5958495651832 2017 36.5052970282406 2018 31.1178674044007 2019 26.9555451538116 2020 23.8270235145523 2021 13.6547196765819