Year	Number
1996	100
1998	98.9361724853516
2000	98.9417953491211
2002	99.4709014892578
2003	95.9798965454102
2004	99.5145645141602
2005	100
2006	100
2007	100
2008	100
2009	100
2010	99.5260696411133
2011	99.5260696411133
2012	99.5260696411133
2013	99.5260696411133
2014	99.523811340332
2015	99.523811340332
2016	99.523811340332
2017	100
2018	99.5283050537109
2019	99.5283050537109
2020	99.5283050537109
2021	99.5283050537109
2022	100