Year	%
1983	14.671749302718212
1984	16.83967720026121
1985	21.354931331338534
1986	26.526584983959552
1987	31.23275351778337
1988	36.27036347222109
1989	40.8292165232606
1990	46.11164644189236
1991	46.55137594417225
1992	48.25768672409656
1993	49.846861157643716
1994	51.43797858694908
1995	54.584936979173776
1996	53.04357685181768
1997	54.504392880923845
1998	56.64909381446217
1999	57.100172081498094
2000	60.654296806760854
2001	62.66788640279133
2002	66.41335568235553
2003	68.52868267440742
2004	71.47758323553099
2005	72.35885603158009
2006	73.60247776451541
2007	74.33791712729389
2008	76.31102880862844
2009	80.27852557752628
2010	78.26187629452373
2011	73.95751557722409
2012	74.02550092639734
2013	74.26367392240401
2014	74.60605259223775
2015	75.51665334919028
2016	75.67485541413694
2017	76.77775109334006
2018	77.85380148478764
2019	77.56545035583464
2020	78.38320193291189
2021	77.48748011851819
2022	77.2160884104618