Year	Percent
1990	70.973
1991	70.737
1992	71.223
1993	71.704
1994	72.178
1995	72.647
1996	73.111
1997	73.568
1998	74.018
1999	74.463
2000	74.901
2001	75.339
2002	75.772
2003	76.2
2004	76.624
2005	77.044
2006	77.464
2007	77.879
2008	78.29
2009	78.696
2010	79.096
2011	79.492
2012	79.882
2013	80.109
2014	80.386
2015	80.693
2016	80.961
2017	81.175
2018	81.388
2019	81.601
2020	81.814
2021	82.028
2022	82.243
2023	82.458
2024	82.672
2025	82.886
2026	83.099
2027	83.312
2028	83.526
2029	83.74
2030	83.955