Year	Number
1996	-0.8248291015625
1998	-0.442392319440842
2000	-0.483501076698303
2002	-0.940807521343231
2003	-0.853618502616882
2004	-0.809159338474274
2005	-0.74197906255722
2006	-0.431123644113541
2007	-0.4021937251091
2008	-0.528391659259796
2009	-0.631416976451874
2010	-0.458648711442947
2011	-0.573696494102478
2012	-0.727891862392426
2013	-0.587771356105804
2014	-0.628422021865845
2015	-0.717430353164673
2016	-0.774184048175812
2017	-0.700783431529999
2018	-0.688172459602356
2019	-0.780918836593628
2020	-0.844050765037537
2021	-0.883186757564545
2022	-0.889222621917725