Year	Percent
1990	79.125
1991	79.073
1992	79.104
1993	79.384
1994	79.457
1995	81.069
1996	81.358
1997	83.054
1998	83.948
1999	83.838
2000	83.483
2001	83.272
2002	83.833
2003	82.272
2004	82.286
2005	82.882
2006	83.28
2007	83.901
2008	85.519
2009	85.213
2010	84.312
2011	84.287
2012	83.962
2013	83.975
2014	84.094
2015	83.875
2016	83.795
2017	83.876
2018	83.961
2019	84.05
2020	84.145
2021	84.246
2022	84.351
2023	84.46
2024	84.571
2025	84.682
2026	84.795
2027	84.907
2028	85.016
2029	85.121
2030	85.222