Year	Percent
2000	31.75456
2001	31.74152
2002	31.73085
2003	31.72019
2004	31.70893
2005	32.73958
2006	33.77066
2007	34.80218
2008	35.83414
2009	36.85912
2010	37.88026
2011	38.89704
2012	39.9105
2013	40.92717
2014	41.9467
2015	42.96877
2016	43.99303
2017	45.01918
2018	46.04734
2019	47.07673
2020	48.10702
2021	49.16923
2022	50.23518