Year	Number
1996	-0.322940558195114
1998	-0.288014978170395
2000	-0.233863085508347
2002	-0.0852507278323174
2003	-0.0765046402812004
2004	-0.283400595188141
2005	-0.428582310676575
2006	-0.602049052715302
2007	-0.85982471704483
2008	-0.819709837436676
2009	-0.667673528194427
2010	-0.539183974266052
2011	-0.552542269229889
2012	-0.697819232940674
2013	-0.740246713161469
2014	-0.364196091890335
2015	-0.4803706407547
2016	-0.654233753681183
2017	-0.798738896846771
2018	-0.875025868415833
2019	-0.263243585824966
2020	-0.339506417512894
2021	-0.37996980547905
2022	-0.401500523090363