Year	Number
1996	-0.93402373790741
1998	-0.935864508152008
2000	-0.991129994392395
2002	-0.991601228713989
2003	-1.15194392204285
2004	-1.12248206138611
2005	-0.978551864624023
2006	-0.907564043998718
2007	-0.827155947685242
2008	-0.752373576164246
2009	-0.784571468830109
2010	-0.801013290882111
2011	-0.733335554599762
2012	-0.936167359352112
2013	-0.87175977230072
2014	-0.782509088516235
2015	-0.77043616771698
2016	-0.670857012271881
2017	-0.681922018527985
2018	-0.649730861186981
2019	-0.644387662410736
2020	-0.567928969860077
2021	-0.625113248825073
2022	-0.601339340209961