Year	Number
1996	98.9130401611328
1998	99.4565200805664
2000	100
2002	100
2003	100
2004	99.5024871826172
2005	99.5098037719727
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	98.0952377319336
2018	99.0476226806641
2019	99.523811340332
2020	99.523811340332
2021	99.523811340332
2022	99.5283050537109