Year	%
1990	54.7012010905608
1991	55.2845067226414
1992	55.828640101798
1993	56.372339516198
1994	56.719441734824
1995	56.9335621317102
1996	57.163377939064
1997	57.3533393180296
1998	57.5159589607362
1999	57.640736614457
2000	57.7573619671538
2001	57.8498380556477
2002	57.9233453000961
2003	57.969262648938
2004	58.01327557125
2005	58.0498700157446
2006	58.0758230390069
2007	58.0834696226301
2008	58.0866413163225
2009	58.1394271954805
2010	58.2769680940859
2011	58.4708939254989
2012	58.7164382976907
2013	59.0149424688915
2014	59.3150488812533
2015	59.5873379951487
2016	59.9374131432399
2017	60.3689366408595
2018	60.8416888343223
2019	61.3230590287874
2020	61.7248594598243
2021	62.047804549608
2022	62.3180878180157