Year	Number
1996	100
1998	100
2000	100
2002	100
2003	98.9417953491211
2004	98.0295562744141
2005	99.0243911743164
2006	99.0243911743164
2007	98.5436859130859
2008	97.0873794555664
2009	99.0430603027344
2010	100
2011	100
2012	100
2013	100
2014	100
2015	100
2016	100
2017	100
2018	100
2019	100
2020	100
2021	100
2022	99.5283050537109