Year	Number
1996	100
1998	96.0198974609375
2000	95.0248718261719
2002	95.5223846435547
2003	94.0298538208008
2004	99.038459777832
2005	100
2006	99.038459777832
2007	97.5961532592773
2008	98.5576934814453
2009	96.6824645996094
2010	95.2606658935547
2011	94.3661956787109
2012	95.3051605224609
2013	93.8967132568359
2014	96.0591125488281
2015	95.5665054321289
2016	95.0738906860352
2017	93.1034469604492
2018	92.7184448242188
2019	93.7198104858398
2020	88.8888854980469
2021	91.7874374389648
2022	91.7874374389648