Year	Number
1996	100
1998	100
2000	100
2002	100
2003	98.3783798217773
2004	98.0099487304688
2005	99.5098037719727
2006	98.0392150878906
2007	98.0582504272461
2008	98.5436859130859
2009	97.6076583862305
2010	98.0861206054688
2011	96.6824645996094
2012	100
2013	100
2014	100
2015	100
2016	100
2017	99.523811340332
2018	99.523811340332
2019	100
2020	100
2021	100
2022	100