Year	Number
1996	-0.401735693216324
1998	-0.452446401119232
2000	-0.31657275557518
2002	0.172739282250404
2003	-0.160814732313156
2004	-0.149925395846367
2005	-0.376651972532272
2006	-0.466557532548904
2007	-0.494043827056885
2008	-0.678380012512207
2009	-0.711697697639465
2010	-0.843002915382385
2011	-0.801002621650696
2012	-0.652322828769684
2013	-0.671195030212402
2014	-0.832643926143646
2015	-0.912680149078369
2016	-0.788824498653412
2017	-0.821170389652252
2018	-0.865196943283081
2019	-0.82778126001358
2020	-0.894477546215057
2021	-1.07720506191254
2022	-1.06221723556519