Year	%
2011	8.0054221465425
2012	6.18702858460746
2013	6.56102257085237
2014	6.18389010006754
2015	5.7247265660517
2016	5.71072482772314
2017	5.24619092380409
2018	4.74201086025218
2019	5.16828540729108
2020	4.77446925869926
2021	4.76216005308376