Year	%
1990	57.8302556818182
1991	58.5168838739226
1992	59.0748924988055
1993	59.5232351586658
1994	59.839941189247
1995	60.116886214848
1996	60.2934554600068
1997	60.425321557928
1998	60.5365225767405
1999	60.6496578060298
2000	60.7595592425128
2001	60.8585697587929
2002	60.9444746308282
2003	61.0076544411988
2004	61.097155226553
2005	61.2125672754037
2006	61.3372693917627
2007	61.4707297310984
2008	61.6186729998516
2009	61.7558850329176
2010	61.8793137911978
2011	62.0272627134202
2012	62.1961319783319
2013	62.3969153804983
2014	62.6022023473228
2015	62.8474484397721
2016	63.0746401089235
2017	63.361622230567
2018	63.6611051946515
2019	63.9317521144866
2020	64.2100336771815
2021	64.5430200414651
2022	64.8934688093008