Year	Percent
2000	9.35119
2001	9.35303
2002	9.35481
2003	9.3567
2004	9.35854
2005	11.64302
2006	13.91952
2007	16.18819
2008	18.44887
2009	20.703
2010	22.95022
2011	25.19025
2012	27.4226
2013	29.64706
2014	31.86306
2015	34.0704
2016	36.26849
2017	38.45707
2018	40.63567
2019	42.80384
2020	44.96115
2021	47.10713
2022	49.24129