Year	Number
1996	100
1998	100
2000	100
2002	100
2003	99.4974899291992
2004	100
2005	100
2006	100
2007	100
2008	100
2009	99.052131652832
2010	99.5260696411133
2011	99.5260696411133
2012	99.5260696411133
2013	99.5260696411133
2014	99.523811340332
2015	99.523811340332
2016	99.523811340332
2017	99.523811340332
2018	99.5283050537109
2019	99.5283050537109
2020	99.5283050537109
2021	99.5283050537109
2022	100