Year % 2009 4.74842538421204 2010 5.19700458229209 2011 5.51828996657184 2012 6.81024074899514 2013 5.88726430200156 2014 6.22871225721664 2015 6.95371578594703 2016 8.9204929445171 2017 9.50706221997094 2018 10.0943646062096 2019 10.2299978450955 2020 11.1309646740818 2021 10.678506618753 2022 12.1423322184624