Year	%
1990	54.5642943792964
1991	55.2629449838188
1992	55.8529549875897
1993	56.3482973433528
1994	56.7809239940388
1995	57.1362557499632
1996	57.430460083994
1997	58.0794025434178
1998	58.3672202897131
1999	58.678397834246
2000	59.0796387035834
2001	59.764514819326
2002	59.9443418918163
2003	60.1126193520307
2004	60.3332355059897
2005	60.5773147114083
2006	60.684693943092
2007	60.7048711317667
2008	60.7005118005191
2009	60.6801587115254
2010	60.6633352596571
2011	60.6660390164868
2012	60.8536430027174
2013	61.2902225484014
2014	61.7760812199102
2015	62.2796663519043
2016	62.8098695995531
2017	63.2443047176669
2018	63.5628842307977
2019	64.0595428737808
2020	64.5849944008959
2021	65.057848614016
2022	65.4683411826269