Year	Percent
2000	0.68915
2001	0.98171
2002	1.27427
2003	1.56683
2004	1.83995
2005	2.10695
2006	2.36783
2007	2.62259
2008	2.87124
2009	3.11376
2010	3.35017
2011	3.58046
2012	3.80463
2013	4.02268
2014	4.23462
2015	4.44044
2016	4.64013
2017	4.83371
2018	5.02118
2019	5.20252
2020	5.37774
2021	5.54685
2022	5.54685