Year	%
1984	16.277039502766293
1985	20.425805056804908
1986	25.398825089698573
1987	29.622168122479138
1988	34.60130427583653
1989	40.20310538882179
1990	45.05556489472254
1991	44.89655592962685
1992	45.15963855152366
1993	46.959699904554114
1994	48.95257227062625
1995	52.24142681363573
1996	51.973289118267004
1997	55.25911843768154
1998	56.6458063887809
1999	57.84354915839795
2000	61.552105631076735
2001	62.8862849049895
2002	66.68904587170722
2003	68.60433701513269
2004	70.64790589638446
2005	72.35118162150036
2006	74.31688416449798
2007	75.43958043715007
2008	77.40572727597322
2009	81.05241990383011
2010	79.35556490303289
2011	75.9121094701809
2012	74.12513043580707
2013	74.97924775408306
2014	76.1110087832713
2015	76.91810074659101
2016	76.95293237941532
2017	79.60867893313645
2018	80.70045599206074
2019	80.45403840975325
2020	81.15019775777291
2021	80.21250196178967
2022	79.66733340386158