Year	Percent
2000	61.33292
2001	61.7928
2002	62.24205
2003	62.67261
2004	63.08791
2005	63.49275
2006	63.88754
2007	64.27271
2008	64.64834
2009	65.01363
2010	65.36988
2011	65.71631
2012	66.05359
2013	66.38481
2014	66.70988
2015	67.02927
2016	67.34213
2017	67.64893
2018	67.94962
2019	68.24367
2020	68.53131
2021	69.07803
2022	69.62173