Year	%
2009	12.7087219554461
2010	11.9573349173135
2011	12.5956019975254
2012	12.993306020068
2013	12.5403877289777
2014	12.5184598126835
2015	12.8540035694888
2016	13.1515333766196
2017	12.871175027192
2018	12.1610965391164
2019	12.4301031322425
2020	12.3081785895039
2021	11.8260714068531
2022	11.2867668498435