Year	Number
1996	-0.298121571540833
1998	-0.188530892133713
2000	-0.234089404344559
2002	-0.140870079398155
2003	-0.405866712331772
2004	-0.389383018016815
2005	-1.00808191299438
2006	-0.65603494644165
2007	-0.416844815015793
2008	-0.350435882806778
2009	-0.33319416642189
2010	-0.261394619941711
2011	-0.223706394433975
2012	-0.34460785984993
2013	-0.325828105211258
2014	-0.450190424919128
2015	-0.536658465862274
2016	-0.386156380176544
2017	-0.378242820501328
2018	-0.397319167852402
2019	-0.392827451229095
2020	-0.450061172246933
2021	-0.625227749347687
2022	-0.63258820772171