Year	Number
1996	100
1998	100
2000	98.9417953491211
2002	99.4709014892578
2003	98.9949722290039
2004	100
2005	100
2006	100
2007	100
2008	100
2009	100
2010	99.5260696411133
2011	99.5260696411133
2012	98.5782012939453
2013	99.5260696411133
2014	99.523811340332
2015	99.523811340332
2016	99.523811340332
2017	99.523811340332
2018	99.0566024780273
2019	99.5283050537109
2020	99.5283050537109
2021	100
2022	100