Year	%
1990	49.0670930752788
1991	50.782258043829
1992	52.2386851540182
1993	53.6334451292319
1994	54.9236146592767
1995	56.0868156527906
1996	57.1260427422368
1997	58.0960526121769
1998	58.9758099232083
1999	59.7714739913898
2000	60.4901306885539
2001	61.1283031702599
2002	61.6142106196048
2003	62.0377592410689
2004	62.3965599526791
2005	62.7191234060331
2006	63.0488361858877
2007	63.346129594405
2008	63.598752218538
2009	63.8300389622457
2010	63.9665979551041
2011	64.0317225633308
2012	64.0959855603745
2013	64.1644452818442
2014	64.2339784622098
2015	64.3144623508875
2016	64.4194974623799
2017	64.551497386176
2018	64.6921855479674
2019	64.8379149221241
2020	64.9761745404164
2021	65.1342928284127
2022	65.3278317615364