Year	Percent
2000	3.60319
2001	4.22216
2002	4.84113
2003	5.46011
2004	6.16313
2005	6.88326
2006	7.62051
2007	8.37488
2008	9.14636
2009	9.93496
2010	10.74068
2011	11.56351
2012	12.40345
2013	13.26051
2014	14.13469
2015	15.02598
2016	15.93439
2017	16.85991
2018	17.80255
2019	18.7623
2020	19.73917
2021	20.73316
2022	21.74426