Year	Percent
1990	68.498
1991	69.268
1992	70.03
1993	70.784
1994	71.533
1995	72.274
1996	73.037
1997	73.792
1998	74.533
1999	75.248
2000	75.93
2001	76.181
2002	76.418
2003	76.643
2004	76.855
2005	77.057
2006	77.458
2007	77.888
2008	78.174
2009	78.612
2010	78.615
2011	79.206
2012	79.71
2013	80.305
2014	80.807
2015	81.192
2016	81.563
2017	81.809
2018	82.056
2019	82.304
2020	82.552
2021	82.799
2022	83.045
2023	83.291
2024	83.537
2025	83.783
2026	84.031
2027	84.279
2028	84.528
2029	84.771
2030	85.008