Year	Number
1996	100
1998	100
2000	100
2002	100
2003	100
2004	99.5024871826172
2005	100
2006	99.0243911743164
2007	99.0291290283203
2008	99.0291290283203
2009	98.5645904541016
2010	99.0430603027344
2011	99.052131652832
2012	99.052131652832
2013	99.5260696411133
2014	99.5192337036133
2015	99.523811340332
2016	99.523811340332
2017	99.523811340332
2018	99.523811340332
2019	99.523811340332
2020	99.0476226806641
2021	98.5714263916016
2022	98.5849075317383