Year	Percent
2000	38.79994
2001	39.4958
2002	40.19166
2003	40.88752
2004	41.58339
2005	42.27925
2006	42.97511
2007	43.67097
2008	44.36684
2009	45.0627
2010	45.75856
2011	46.80532
2012	47.86259
2013	48.93038
2014	50.00867
2015	51.09748
2016	52.19681
2017	53.30664
2018	54.42699
2019	55.55785
2020	56.69922
2021	57.85111
2022	59.01351