Year	Number
1996	-1.12234926223755
1998	-0.906528890132904
2000	-0.820246458053589
2002	-1.02413702011108
2003	-0.972793400287628
2004	-0.720635175704956
2005	-0.912781834602356
2006	-0.842229604721069
2007	-0.836638271808624
2008	-0.818746328353882
2009	-0.769573271274567
2010	-0.753017663955688
2011	-0.810016274452209
2012	-0.931122064590454
2013	-0.959768235683441
2014	-0.898471713066101
2015	-0.936662197113037
2016	-0.809304058551788
2017	-0.84801709651947
2018	-0.812619864940643
2019	-0.847178757190704
2020	-0.830199360847473
2021	-0.934422612190247
2022	-0.898889482021332