Year	Number
1996	100
1998	100
2000	99.5024871826172
2002	99.0049743652344
2003	94.5273666381836
2004	75
2005	97.1153869628906
2006	99.038459777832
2007	99.038459777832
2008	96.1538467407227
2009	97.1563949584961
2010	98.1042633056641
2011	95.7746505737305
2012	96.2441329956055
2013	96.2441329956055
2014	99.014778137207
2015	89.6551742553711
2016	93.596061706543
2017	93.1034469604492
2018	89.3203887939453
2019	85.9903411865234
2020	87.4396133422852
2021	87.4396133422852
2022	86.9565200805664