Year	%
2005	5.22982329166892
2008	6.32558822247969
2011	5.86709064425737
2012	6.12690108085791
2013	6.07239638921747
2014	6.31072146718646
2015	6.67847337958985
2016	6.70143866382393
2017	7.04073187631062
2018	6.89425620584035
2019	8.02536160742248
2020	7.81226700977292
2021	7.82632507203676