Year	%
1990	54.09328981071555
1991	54.320953895574
1992	54.872318717496654
1993	55.74813165824167
1994	55.7793055879319
1995	56.10638946923886
1996	56.29242650966844
1997	56.35494932085944
1998	56.39493507904302
1999	56.46445682305951
2000	56.48546263112771
2001	56.89169610396436
2002	56.92218440383324
2003	56.97027412247475
2004	57.03216666584155
2005	57.139769513625126
2006	57.153269915910315
2007	57.222095216076376
2008	57.31473562459314
2009	57.38088858450079
2010	57.45491522140187
2011	57.58217175569126
2012	57.81729984024837
2013	58.13318018292731
2014	58.52949216262255
2015	58.85466885767817
2016	59.174162246587805
2017	59.47800581306787
2018	59.7649453503928
2019	60.09693439695192
2020	60.363891528291354
2021	60.60385991841693
2022	60.86085233042676