Year	Number
1996	-0.531715393066406
1998	-0.468716353178024
2000	-0.532826900482178
2002	-0.34913581609726
2003	-0.381814122200012
2004	-0.479586213827133
2005	-0.51753842830658
2006	-0.549666523933411
2007	-0.529506206512451
2008	-0.404740959405899
2009	-0.479686051607132
2010	-0.496428072452545
2011	-0.456424236297607
2012	-0.360225439071655
2013	-0.261999785900116
2014	-0.224575787782669
2015	-0.242752283811569
2016	-0.312088489532471
2017	-0.339759320020676
2018	-0.358200490474701
2019	-0.474514842033386
2020	-0.64818286895752
2021	-0.607837975025177
2022	-0.519154012203217