Year	%
1990	53.33183222207134
1991	53.55023087760841
1992	53.785995752927
1993	54.35748926018894
1994	54.52911429373579
1995	54.866225614552235
1996	54.88358331872512
1997	54.9288738071573
1998	54.983709941168364
1999	55.05198185351895
2000	55.17673286686346
2001	55.23370689511973
2002	55.318393174442335
2003	55.34334341247997
2004	55.4040726476106
2005	55.50561856409065
2006	55.57441758617733
2007	55.65917528884632
2008	55.76717861024247
2009	55.88590579919285
2010	56.026168084336355
2011	56.23059771372141
2012	56.51360761203027
2013	56.77762281565043
2014	57.16553333622025
2015	57.516906737176946
2016	57.807315370961554
2017	58.12495656248334
2018	58.43629219869706
2019	58.741135539598915
2020	59.027004530479765
2021	59.21329587050454
2022	59.47328384316611