Year	Number
1996	-0.138794779777527
1998	-0.0995105654001236
2000	-0.0709462091326714
2002	-0.0821832045912743
2003	0.103039585053921
2004	0.0846992805600166
2005	0.117468550801277
2006	-0.00337432185187936
2007	-0.0358059145510197
2008	0.0228446871042252
2009	0.0489085502922535
2010	0.0499801225960255
2011	0.0154577177017927
2012	-0.0366085544228554
2013	-0.00446107843890786
2014	-0.0758084133267403
2015	-0.232355147600174
2016	-0.341918140649796
2017	-0.318338751792908
2018	-0.390645027160645
2019	-0.347564905881882
2020	-0.420469641685486
2021	-0.432599365711212
2022	-0.458115965127945