Year	Percent
2000	60.66025
2001	61.20775
2002	61.65276
2003	62.09596
2004	62.53734
2005	62.9769
2006	63.41464
2007	63.85057
2008	64.28468
2009	64.71698
2010	65.14745
2011	65.57611
2012	66.00296
2013	66.42798
2014	66.85119
2015	67.27258
2016	67.69216
2017	68.10991
2018	68.52585
2019	68.93998
2020	69.35228
2021	69.76277
2022	70.17144