Year	Percent
1990	86.836
1991	86.939
1992	87.059
1993	87.237
1994	87.415
1995	87.557
1996	87.604
1997	87.587
1998	87.555
1999	87.522
2000	88.025
2001	88.508
2002	88.975
2003	89.421
2004	89.844
2005	90.242
2006	90.621
2007	90.983
2008	91.335
2009	91.681
2010	92.024
2011	92.364
2012	92.7
2013	93.031
2014	93.357
2015	93.675
2016	93.986
2017	94.23
2018	94.476
2019	94.717
2020	94.953
2021	95.182
2022	95.406
2023	95.624
2024	95.838
2025	96.049
2026	96.258
2027	96.464
2028	96.668
2029	96.867
2030	97.064