Year	Percent
2000	78.63603
2001	78.83572
2002	80.02853
2003	81.21579
2004	82.39776
2005	83.57281
2006	84.74156
2007	85.91682
2008	87.16196
2009	88.38433
2010	89.58419
2011	90.76149
2012	91.91556
2013	93.04596
2014	94.15293
2015	95.23622
2016	96.20748
2017	96.80501
2018	97.38221
2019	97.82035
2020	98.03051
2021	98.19447
2022	98.59316