Year	Number
1996	85.5
1998	84.0796051025391
2000	86.5671615600586
2002	86.5671615600586
2003	92.0398025512695
2004	90.3846130371094
2005	88.9423065185547
2006	89.9038467407227
2007	90.8653869628906
2008	90.8653869628906
2009	87.6777267456055
2010	88.6255950927734
2011	87.7934265136719
2012	88.2629089355469
2013	87.7934265136719
2014	89.1625595092773
2015	89.1625595092773
2016	88.6699523925781
2017	87.1921157836914
2018	82.5242691040039
2019	82.6086959838867
2020	85.0241546630859
2021	82.6086959838867
2022	83.5748825073242