Year	%
2001	3.178123
2002	24.9816
2004	26.93557
2005	27.44935
2006	22.43236
2007	23.38425
2008	36.91573
2009	40.03956
2010	23.14631
2011	36.66667
2012	20.88148
2013	16.76552
2014	18.01946
2015	19.56499
2016	19.57022
2017	13.71837
2018	7.092549
2019	19.04781
2020	19.96985
2021	21.63026