Year	Number
1996	100
1998	100
2000	100
2002	100
2003	100
2004	100
2005	100
2006	100
2007	100
2008	100
2009	100
2010	99.052131652832
2011	98.591552734375
2012	98.591552734375
2013	99.530517578125
2014	99.5073928833008
2015	100
2016	100
2017	100
2018	100
2019	99.5169067382813
2020	99.5169067382813
2021	99.5169067382813
2022	99.5169067382813