Year	%
1983	10.623982470228915
1984	14.449701514049112
1985	16.862570334465254
1986	19.588645038604128
1987	22.760146478390492
1988	29.136920014963955
1989	38.922281529192816
1990	44.92256667700882
1991	42.85632169789524
1992	44.37383498800919
1993	46.25943571647581
1994	48.50412027265175
1995	51.29674347671837
1996	50.16953565009693
1997	51.59441226665961
1998	51.50610833182467
1999	53.00963030541816
2000	57.37331059312818
2001	59.68279602424357
2002	65.78049096030563
2003	68.31557850949359
2004	73.57717697904467
2005	75.17892558400736
2006	76.3782405753171
2007	77.4408251054276
2008	79.5482265371745
2009	83.73777980317197
2010	81.19160829275366
2011	78.65850998477886
2012	74.89820650457969
2013	76.5657936735375
2014	79.4964251956789
2015	80.43039288000587
2016	80.46742475862027
2017	83.63524147655848
2018	83.68645396897546
2019	83.78794732372747
2020	82.86647049731133
2021	82.04134042194686
2022	80.51333725738091