Year	Percent
1990	78.74
1991	80.161
1992	81.503
1993	82.763
1994	83.943
1995	84.321
1996	84.574
1997	84.932
1998	85.483
1999	86.046
2000	86.354
2001	86.844
2002	87.261
2003	87.531
2004	87.916
2005	88.422
2006	88.65
2007	88.872
2008	89.066
2009	89.295
2010	89.74
2011	89.851
2012	90.106
2013	90.277
2014	90.379
2015	90.384
2016	90.417
2017	90.625
2018	90.834
2019	91.041
2020	91.25
2021	91.459
2022	91.669
2023	91.881
2024	92.096
2025	92.316
2026	92.539
2027	92.766
2028	92.994
2029	93.216
2030	93.426