Year	Percent
2000	8.73437
2001	10.35184
2002	11.95965
2003	13.55779
2004	15.14626
2005	16.72506
2006	18.29419
2007	19.85366
2008	21.40346
2009	22.94359
2010	24.47406
2011	25.99485
2012	27.50598
2013	29.00745
2014	30.49924
2015	31.98136
2016	33.45382
2017	34.91661
2018	36.36974
2019	37.81319
2020	39.24698
2021	40.6711
2022	42.21752