Year	Percent
2000	20.17332
2001	20.77614
2002	21.37847
2003	22.13137
2004	22.8843
2005	23.86522
2006	24.86311
2007	24.56039
2008	25.90049
2009	27.25765
2010	28.63191
2011	30.01958
2012	31.00428
2013	32.00099
2014	33.01001
2015	34.03126
2016	35.06461
2017	36.10926
2018	37.16507
2019	38.23091
2020	39.30662
2021	40.39141
2022	40.5758