Year	Number
1996	-0.651714682579041
1998	-0.644843220710754
2000	-0.664511322975159
2002	-0.267191708087921
2003	-0.53651624917984
2004	-0.928992569446564
2005	-0.915095210075378
2006	-0.681605339050293
2007	-0.817054867744446
2008	-0.739144027233124
2009	-0.774942636489868
2010	-0.854655921459198
2011	-0.749479055404663
2012	-0.7989581823349
2013	-0.80731475353241
2014	-0.833610534667969
2015	-0.837602376937866
2016	-0.870378136634827
2017	-0.894111037254334
2018	-0.909116744995117
2019	-0.967672407627106
2020	-0.974100470542908
2021	-0.947238504886627
2022	-0.89024293422699