Year	Percent
2000	80.84652
2001	81.73641
2002	82.62604
2003	83.5154
2004	84.40449
2005	85.29329
2006	86.18151
2007	87.06975
2008	87.95767
2009	88.84505
2010	89.74768
2011	90.65622
2012	91.56041
2013	92.46028
2014	93.35602
2015	94.24759
2016	95.13617
2017	96.02131
2018	96.9024
2019	97.77879
2020	98.35991
2021	98.37115
2022	98.38285