Year	Number
1996	-0.639208674430847
1998	-0.595585644245148
2000	-0.567300498485565
2002	-0.463561415672302
2003	-0.588842928409576
2004	-0.953119218349457
2005	-0.742212891578674
2006	-0.692943096160889
2007	-0.791534423828125
2008	-0.81800764799118
2009	-0.704490542411804
2010	-0.6956827044487
2011	-0.787440359592438
2012	-0.814642906188965
2013	-0.688907444477081
2014	-0.588590502738953
2015	-0.603224992752075
2016	-0.826682507991791
2017	-0.776277244091034
2018	-0.688618004322052
2019	-0.691047370433807
2020	-0.598265945911407
2021	-0.556139707565308
2022	-0.532641351222992