Year	Percent
2000	36.94812
2001	37.58069
2002	38.21268
2003	38.8436
2004	39.4739
2005	40.2553
2006	41.03784
2007	41.82099
2008	42.60557
2009	43.38922
2010	44.17278
2011	44.95571
2012	45.73794
2013	46.51894
2014	47.2991
2015	48.07745
2016	48.85435
2017	49.62931
2018	50.40224
2019	51.17221
2020	51.94002
2021	52.70431
2022	53.46588