Year	%
1990	52.643989962321314
1991	53.02700985289786
1992	53.283152051555696
1993	54.12539162282073
1994	54.03911495257272
1995	54.271629621527424
1996	54.1797510040682
1997	54.26327854821241
1998	54.263234264244986
1999	54.23663698652848
2000	54.26485870030134
2001	54.19778703187878
2002	54.04212253872315
2003	54.03047403793668
2004	54.25256743754394
2005	54.27840427512122
2006	54.2783338497622
2007	54.303947183072154
2008	54.3605659264512
2009	54.39740777879312
2010	54.48615137008193
2011	54.64668477404656
2012	54.905546852068596
2013	55.15823665112897
2014	55.532975947089184
2015	55.834669315631736
2016	56.110267089152714
2017	56.40674086722923
2018	56.6443511109074
2019	56.91629586296461
2020	57.14874741989613
2021	57.34292073260172
2022	57.59028002002437