Year	Percent
2000	24.70019
2001	26.90676
2002	29.16171
2003	31.46505
2004	33.81679
2005	36.21691
2006	38.66543
2007	41.16234
2008	43.70764
2009	46.30133
2010	48.94341
2011	51.63388
2012	54.37274
2013	57.15999
2014	59.99563
2015	62.87967
2016	65.81209
2017	68.79291
2018	71.82211
2019	74.89971
2020	78.0257
2021	81.20008
2022	83.56946