Year	Number
1996	-0.270231127738953
1998	-0.178727999329567
2000	-0.189359664916992
2002	-0.259639918804169
2003	-0.282602161169052
2004	-0.533950924873352
2005	-0.434344530105591
2006	-0.363591104745865
2007	-0.571789562702179
2008	-0.436524838209152
2009	-0.36999648809433
2010	-0.396744579076767
2011	-0.407737106084824
2012	-0.303469598293304
2013	-0.147563919425011
2014	-0.220856681466103
2015	-0.260019838809967
2016	-0.263931721448898
2017	-0.260830879211426
2018	-0.506258010864258
2019	-0.531037092208862
2020	-0.492181956768036
2021	-0.602753639221191
2022	-0.718993604183197