Year	%
1990	56.1498900010199
1991	56.8185820569528
1992	57.3245888735201
1993	57.734445771902
1994	58.0489895149999
1995	58.3275551241159
1996	58.5606688675532
1997	58.765009582926
1998	58.9566913377339
1999	59.1366336847709
2000	59.3062884024843
2001	59.4627368445052
2002	59.6046255816398
2003	59.7251598679681
2004	59.8212844534261
2005	59.8874886201285
2006	59.931223898043
2007	59.9639661345441
2008	59.9971173966889
2009	60.044052159745
2010	60.1083242329235
2011	60.1870162845773
2012	60.2702609475518
2013	60.308607675013
2014	60.3676321773397
2015	60.4588707720966
2016	60.586157964604
2017	60.7289155295945
2018	60.8967546590473
2019	61.0777498465306
2020	61.2565770072483
2021	61.4283262516837
2022	61.6123081644111