Year	%
1990	53.0768367702715
1991	53.6073901893076
1992	54.0359072558514
1993	54.4077321774068
1994	54.7315155909012
1995	55.035718126589
1996	55.3094219998139
1997	55.5669318603014
1998	55.8221295691041
1999	56.0899998965043
2000	56.3630111105922
2001	56.6336470211829
2002	56.8916340445782
2003	57.1249222737901
2004	57.3253695660184
2005	57.5015429691474
2006	57.657077317077
2007	57.7755622003062
2008	57.8582220352965
2009	57.9466308027975
2010	58.7941946932944
2011	58.994811790349
2012	59.2418622610664
2013	59.4779346144568
2014	59.6069507242823
2015	59.7404557361028
2016	59.8889834645066
2017	60.0536229593552
2018	60.2161468471976
2019	60.3776096269848
2020	60.5516086911776
2021	60.6931797198608
2022	60.825293664042