Year	Percent
2000	3.14756
2001	3.313
2002	3.47844
2003	3.64388
2004	4.01855
2005	4.41139
2006	4.82241
2007	5.2516
2008	5.69896
2009	6.1645
2010	6.64822
2011	7.1501
2012	7.67016
2013	8.2084
2014	8.76481
2015	9.33939
2016	9.93214
2017	10.54307
2018	11.17218
2019	11.81945
2020	12.48491
2021	13.16853
2022	13.87033