Year	Percent
2000	27.15506
2001	28.21113
2002	29.26721
2003	30.32329
2004	31.37937
2005	32.48345
2006	33.59066
2007	34.70099
2008	35.81445
2009	36.93104
2010	38.05075
2011	39.17358
2012	40.29955
2013	41.42864
2014	42.56085
2015	43.69619
2016	44.83466
2017	45.97625
2018	47.12097
2019	48.26882
2020	49.41979
2021	50.57389
2022	50.57389