Year	Percent
2000	13.12939
2001	14.06694
2002	15.00448
2003	15.94203
2004	16.87957
2005	18.02441
2006	19.19106
2007	20.37953
2008	21.58981
2009	22.82191
2010	24.07583
2011	25.35156
2012	26.6491
2013	27.96847
2014	29.30964
2015	30.67263
2016	32.05744
2017	33.46407
2018	34.89251
2019	36.34276
2020	37.81483
2021	39.30872
2022	39.30872