Year	Number
1996	100
1998	100
2000	100
2002	100
2003	100
2004	100
2005	100
2006	100
2007	100
2008	100
2009	100
2010	100
2011	100
2012	100
2013	100
2014	99.5192337036133
2015	99.523811340332
2016	99.0476226806641
2017	98.5714263916016
2018	99.523811340332
2019	99.0476226806641
2020	99.0476226806641
2021	98.5714263916016
2022	99.5283050537109