Year	%
1980	13.538177460564924
1981	15.79261706422201
1982	21.559675004864175
1983	24.274878297739473
1984	27.966217486399177
1985	32.792020726322804
1986	38.01680928463627
1987	44.86557076409882
1988	51.029807517095996
1989	53.224384996884204
1990	66.21375671525664
1991	68.32882556198867
1992	67.98955509700261
1993	70.28181625200973
1994	70.4771086024109
1995	71.13473035171937
1996	71.86870842715238
1997	74.9180349303225
1998	74.76663592627251
1999	76.18506364444575
2000	77.40338860806098
2001	76.89762516240603
2002	80.09840445515626
2003	80.2798500461546
2004	81.16764839994562
2005	81.03085759412627
2006	82.17050014490698
2007	81.83184746546665
2008	82.00757832976524
2009	83.59817040062552
2010	85.60343211680751
2011	84.84133009934993
2012	83.88165218735574
2013	84.42843356854318
2014	85.41824057420632
2015	85.69558632138437
2016	85.93999361873469
2017	89.54515964971718
2018	89.57390249687033
2019	89.58390781781975
2020	89.45598072687483
2021	89.61234472187145
2022	90.42604137731034