Year	Number
1996	-0.334077596664429
1998	-0.410246044397354
2000	-0.61205130815506
2002	-0.69371634721756
2003	-0.4033422768116
2004	-0.472706973552704
2005	-0.28120756149292
2006	-0.343308329582214
2007	-0.350907623767853
2008	-0.294380694627762
2009	-0.268264323472977
2010	-0.283094167709351
2011	-0.235385775566101
2012	-0.390580028295517
2013	-0.375282853841782
2014	-0.239125564694405
2015	-0.0906946510076523
2016	-0.161230459809303
2017	0.15488900244236
2018	0.0946238711476326
2019	0.107311986386776
2020	0.106146551668644
2021	0.077017717063427
2022	-0.0112340543419123