Year	Percent
2000	73.94381
2001	74.52274
2002	75.10158
2003	75.68031
2004	76.25895
2005	76.83748
2006	77.41592
2007	77.99425
2008	78.57248
2009	79.15062
2010	79.72865
2011	80.30659
2012	80.88442
2013	81.46215
2014	82.03979
2015	82.61732
2016	83.19476
2017	83.77209
2018	84.34932
2019	84.92646
2020	85.50349
2021	86.08042
2022	86.65725