Year	Number
1996	100
1998	100
2000	100
2002	93.121696472168
2003	87.4371871948242
2004	81.5533981323242
2005	79.1262130737305
2006	75.8454132080078
2007	73.4299545288086
2008	76.4423065185547
2009	81.9905242919922
2010	81.5165863037109
2011	89.5734634399414
2012	91.4691925048828
2013	90.9952621459961
2014	86.1904754638672
2015	78.5714263916016
2016	77.6190490722656
2017	78.5714263916016
2018	75.4716949462891
2019	75.4716949462891
2020	73.5849075317383
2021	78.301887512207
2022	71.2264175415039