Year	Number
1996	-0.594427824020386
1998	-0.586415469646454
2000	-0.52839332818985
2002	-0.163837283849716
2003	-0.405683517456055
2004	0.0173193961381912
2005	-0.500624358654022
2006	-0.441336750984192
2007	-0.631416618824005
2008	-0.539653778076172
2009	-0.665914297103882
2010	-0.693730175495148
2011	-0.819794893264771
2012	-0.538148701190948
2013	-0.404944121837616
2014	-0.0191790424287319
2015	-0.404167622327805
2016	-0.402664005756378
2017	-0.351470172405243
2018	-0.400912255048752
2019	-0.4248306453228
2020	-0.447489053010941
2021	-0.421767115592957
2022	-0.439371019601822