Year	Percent
2003	3.09241
2004	5.83812
2005	0.96472
2006	14.67686
2007	8.25836
2008	5.58139
2009	6.82548
2010	8.87768
2011	14.41621
2012	12.25155
2013	13.38318
2014	10.81016
2015	12.26797
2016	7.5032
2017	8.03856
2018	8.8886
2019	5.40901
2020	13.78136
2021	8.44236