Year % (cumulative) 1970 2.48062992095947 2007 15.9586296081543 2010 9.25432014465332 2011 8.73715019226074 2012 8.98484039306641 2013 9.70973968505859 2014 9.83271026611328 2015 10.1135501861572 2016 18.4101905822754 2017 8.5260763168335 2018 9.84568977355957 2019 10.4271841049194 2020 9.6552209854126 2021 9.1821174621582 2022 13.0046367645264