Year	%
1987	40.80787354798052
1988	44.713066766614574
1989	49.036421770061814
1990	54.66957918035068
1991	56.82502259167367
1992	59.2401403871741
1993	63.42981584410666
1994	66.31228631990217
1995	68.86364933241428
1996	71.24675545456466
1997	73.23604171686613
1998	75.03707353411743
1999	77.17735274661918
2000	78.61195027213029
2001	76.01880805528425
2002	68.9536732284786
2003	74.8687448189816
2004	75.64195864159228
2005	72.02262640928998
2006	80.81768488376629
2007	81.18049767035147
2008	81.54180365842842
2009	81.9813714011735
2010	84.39589732992552
2011	84.8511493688956
2012	85.3985561680168
2013	86.98243225740906
2014	87.94923253525499
2015	88.75649697570924
2016	88.70441383979929
2017	92.26162241830167
2018	92.32717993457216
2019	92.40778552360412
2020	93.20555916254607
2021	93.77867149346925
2022	93.96237564964817