Year	%
1990	50.9090909090909
1991	50.3267973856209
1992	50
1993	49.4845360824742
1994	49.1139240506329
1995	48.5875706214689
1996	48.0959097320169
1997	47.4413646055437
1998	46.9487388120423
1999	46.4621164683782
2000	45.7807953443259
2001	45.0682852807284
2002	44.2152466367713
2003	43.2201377345049
2004	42.1574232894988
2005	41.2184157494962
2006	40.4092071611253
2007	39.8348702552005
2008	39.5186478045196
2009	39.420452721143
2010	39.5720399429387
2011	39.9216089442909
2012	40.3289050155089
2013	40.6598137882783
2014	40.9927021893432
2015	41.4376024350269
2016	41.9380495780125
2017	42.4140398131392
2018	42.825320967154
2019	43.2104104418934
2020	43.5391421427197
2021	43.8348394903014
2022	44.1825010225709