Year	Number
1996	100
1998	100
2000	100
2002	100
2003	100
2004	100
2005	100
2006	100
2007	100
2008	100
2009	99.052131652832
2010	93.8388595581055
2011	99.052131652832
2012	98.5782012939453
2013	98.5782012939453
2014	99.523811340332
2015	99.523811340332
2016	99.523811340332
2017	98.5714263916016
2018	99.0566024780273
2019	98.5849075317383
2020	98.5849075317383
2021	97.6415100097656
2022	97.6415100097656