Year	Percent
2000	62.26689
2001	62.7438
2002	63.21519
2003	63.68105
2004	64.1414
2005	64.59622
2006	65.04551
2007	65.48929
2008	65.92754
2009	66.36027
2010	66.78748
2011	67.20917
2012	67.62533
2013	68.03597
2014	68.44109
2015	68.84068
2016	69.23476
2017	69.62331
2018	70.00634
2019	70.38384
2020	70.75583
2021	71.12229
2022	71.12229