Year	Number
1996	-0.89330792427063
1998	-0.850274562835693
2000	-0.904505729675293
2002	-0.764728426933289
2003	-0.710449934005737
2004	-0.63551265001297
2005	-0.816437661647797
2006	-0.915733158588409
2007	-0.902503430843353
2008	-0.917434334754944
2009	-0.933081448078156
2010	-1.00690793991089
2011	-0.981007635593414
2012	-1.08161604404449
2013	-0.980688691139221
2014	-1.01568114757538
2015	-1.01745092868805
2016	-1.03936290740967
2017	-1.08728611469269
2018	-0.985928177833557
2019	-0.817990303039551
2020	-0.760830402374268
2021	-0.831710994243622
2022	-0.786164522171021