Year	Percent
2000	38.63259
2001	39.21389
2002	39.79751
2003	40.38434
2004	40.97391
2005	41.56622
2006	42.16124
2007	42.75939
2008	43.35981
2009	43.96291
2010	44.57603
2011	45.19886
2012	45.83146
2013	46.4731
2014	47.12342
2015	47.78243
2016	48.44975
2017	49.12497
2018	49.80801
2019	50.49806
2020	51.19538
2021	51.8991
2022	51.99515