Year	%
1990	55.5941104754759
1991	56.4074022540699
1992	56.9907170112193
1993	57.476867973336
1994	57.9075309818875
1995	58.271064158722
1996	58.574619457313
1997	58.8122672050684
1998	59.012076053443
1999	59.1944546231831
2000	59.3378988606119
2001	59.459778597786
2002	59.5636342106042
2003	59.686216829074
2004	59.7553083299948
2005	59.8164417474263
2006	59.8419561652005
2007	59.84372696447
2008	59.8297646746974
2009	59.8320026119735
2010	59.8542543977541
2011	59.8922159140033
2012	60.002931691586
2013	60.2925373134328
2014	60.7398822775931
2015	61.1886915684384
2016	61.6632730974803
2017	62.4712550607287
2018	63.2799973822846
2019	63.9414914457359
2020	64.5685607900275
2021	65.041224214815
2022	65.3033336511266