Year	Number
1996	100
1998	100
2000	100
2002	100
2003	100
2004	89.4230804443359
2005	88.9952163696289
2006	89.9521560668945
2007	88.9952163696289
2008	87.9807662963867
2009	87.6777267456055
2010	86.7298583984375
2011	85.9154891967773
2012	83.5680770874023
2013	85.4460067749023
2014	81.25
2015	80.9523773193359
2016	80.476188659668
2017	81.9047622680664
2018	83.3333358764648
2019	81.9047622680664
2020	84.2857131958008
2021	82.3809509277344
2022	83.4905624389648