Year	Number
1996	-0.269144207239151
1998	-0.150950506329536
2000	-0.190723955631256
2002	-0.0885490924119949
2003	-0.0924526825547218
2004	-0.164139300584793
2005	-0.206795960664749
2006	-0.310158848762512
2007	-0.435254871845245
2008	-0.464874476194382
2009	-0.480314403772354
2010	-0.505228579044342
2011	-0.545052945613861
2012	-0.575279295444489
2013	-0.594175636768341
2014	-0.667191743850708
2015	-0.296130180358887
2016	-0.0810505524277687
2017	-0.061878327280283
2018	-0.00806798506528139
2019	-0.0890978872776031
2020	-0.052087277173996
2021	-0.0740992426872253
2022	-0.191544353961945