Year	%
1984	13.201691191223782
1985	16.443293953933996
1986	20.076214531792573
1987	23.906252300454817
1988	28.76399971016132
1989	34.827248018706655
1990	40.5472830856849
1991	39.95343635681702
1992	40.31889007656339
1993	41.59804888679716
1994	43.80969573028615
1995	47.450899365364926
1996	48.657775450388044
1997	50.945656306784905
1998	51.103607941119954
1999	51.797441954841226
2000	56.67134104534582
2001	58.50853720894633
2002	63.16094538521629
2003	65.9907979774461
2004	69.70309358898386
2005	70.259972407127
2006	71.37312444436748
2007	72.15760454155222
2008	73.8896737566855
2009	77.83076965673008
2010	77.25212506039838
2011	72.69098844537295
2012	70.30977271576361
2013	71.34683645704365
2014	72.39484666001573
2015	73.05667041382159
2016	73.16320686239881
2017	75.6695369214481
2018	76.91148512159303
2019	76.9145094989193
2020	77.51386420588595
2021	76.8391281000348
2022	76.2696251442134