Year	Number
1996	0.739518105983734
1998	0.73138689994812
2000	0.571376621723175
2002	0.140795692801476
2003	0.210127502679825
2004	-0.789211392402649
2005	-0.814222395420074
2006	-0.60367089509964
2007	-0.781534910202026
2008	-0.633352220058441
2009	-0.675235211849213
2010	-0.64786422252655
2011	-0.518693208694458
2012	-0.528098583221436
2013	-0.512893557548523
2014	-0.490208208560944
2015	-0.489762008190155
2016	-0.301017880439758
2017	-0.190316244959831
2018	-0.201933979988098
2019	-0.109286606311798
2020	-0.0377568453550339
2021	-0.364999383687973
2022	-0.241932362318039