Year	Number
1996	100
1998	100
2000	100
2002	100
2003	99.4974899291992
2004	100
2005	100
2006	100
2007	100
2008	100
2009	100
2010	100
2011	99.052131652832
2012	94.7867279052734
2013	98.5782012939453
2014	99.523811340332
2015	99.523811340332
2016	99.0476226806641
2017	98.0952377319336
2018	99.5283050537109
2019	97.6415100097656
2020	98.5849075317383
2021	98.1132049560547
2022	100