Year	Percent
1990	92.435
1991	92.401
1992	92.414
1993	92.44
1994	92.458
1995	92.479
1996	92.453
1997	92.44
1998	92.436
1999	92.447
2000	92.476
2001	92.488
2002	92.454
2003	92.527
2004	92.592
2005	92.661
2006	93.331
2007	93.918
2008	94.43
2009	94.872
2010	95.249
2011	95.525
2012	95.753
2013	94.791
2014	93.6
2015	92.131
2016	92.228
2017	92.434
2018	92.64
2019	92.846
2020	93.051
2021	93.255
2022	93.459
2023	93.663
2024	93.865
2025	94.067
2026	94.269
2027	94.47
2028	94.671
2029	94.871
2030	95.073