Year	Percent
1990	70.356
1991	70.528
1992	71.178
1993	72.035
1994	72.858
1995	73.392
1996	73.492
1997	73.425
1998	73.23
1999	73.079
2000	75.052
2001	76.894
2002	78.603
2003	80.183
2004	81.644
2005	82.995
2006	84.237
2007	85.375
2008	84.816
2009	84.036
2010	83.002
2011	81.707
2012	82.634
2013	83.029
2014	82.787
2015	83.017
2016	82.949
2017	82.978
2018	83.018
2019	83.087
2020	83.2
2021	83.357
2022	83.57
2023	83.838
2024	84.156
2025	84.517
2026	84.918
2027	85.361
2028	85.836
2029	86.323
2030	86.807