Year	Percent
2000	76.63267
2001	77.33417
2002	78.03566
2003	78.67884
2004	79.32098
2005	79.96208
2006	80.60214
2007	81.24116
2008	81.87914
2009	82.51608
2010	83.15198
2011	83.78685
2012	84.42067
2013	85.05346
2014	85.6852
2015	86.31591
2016	86.94558
2017	87.57421
2018	88.2018
2019	88.82835
2020	89.45386
2021	90.07833
2022	90.76995