Year	Number
1996	1.05084490776062
1998	1.05356311798096
2000	1.03490352630615
2002	1.03455221652985
2003	1.03794968128204
2004	0.908433735370636
2005	0.659244239330292
2006	0.921211838722229
2007	0.893503189086914
2008	0.937939405441284
2009	0.972667455673218
2010	0.952869892120361
2011	0.942094743251801
2012	0.945719003677368
2013	0.831776916980743
2014	-0.175930172204971
2015	0.553204715251923
2016	0.473494410514832
2017	0.406978100538254
2018	0.376565635204315
2019	0.363741606473923
2020	0.407973527908325
2021	0.303531020879745
2022	0.391315579414368