Year	Number
1996	100
1998	99
2000	99.5024871826172
2002	100
2003	98.5074615478516
2004	98.0769195556641
2005	98.0861206054688
2006	97.1291885375977
2007	97.6076583862305
2008	96.6346130371094
2009	95.7345962524414
2010	94.3127975463867
2011	93.8967132568359
2012	96.7136154174805
2013	96.2441329956055
2014	98.0769195556641
2015	97.6190490722656
2016	98.0952377319336
2017	99.0476226806641
2018	99.0476226806641
2019	99.0476226806641
2020	97.6190490722656
2021	97.6190490722656
2022	97.6415100097656