Year	%
2013	7.27006326012274
2014	6.83654700487515
2015	7.27530803959724
2016	6.28615934155792
2017	6.2109555189957
2018	6.01756888201231
2019	6.10710713131734
2020	5.58661427490228
2021	5.34283869762069