Year	Percent
2000	6.18379
2001	7.30952
2002	8.45013
2003	9.60563
2004	10.77601
2005	11.96128
2006	13.16143
2007	14.37648
2008	15.6064
2009	16.85121
2010	18.11091
2011	19.3855
2012	20.67496
2013	21.97932
2014	23.29856
2015	24.63269
2016	25.9817
2017	27.3456
2018	28.72438
2019	30.11805
2020	31.5266
2021	31.5266
2022	31.5266