Year	%
1990	61.1564605052636
1991	61.7676645910062
1992	62.2578844543678
1993	62.6607673192315
1994	63.0878457479809
1995	63.4772364295995
1996	63.8003398080544
1997	64.0464326210016
1998	64.2676146735461
1999	64.4670605816388
2000	64.6224430668117
2001	64.7510027455897
2002	64.8630971961532
2003	64.9534513902827
2004	65.0069668793398
2005	65.0169843001617
2006	64.9806502597398
2007	64.9001188278235
2008	64.7786606567436
2009	64.6389463205452
2010	64.485396937279
2011	64.4231559290383
2012	64.5030448259942
2013	64.6613564458714
2014	64.8923242143342
2015	65.246760455878
2016	65.7657811042176
2017	66.3887107119949
2018	67.0555484511947
2019	67.6484960713964
2020	68.151444159683
2021	68.5800324870468
2022	68.9008676165529