Year	Number
1996	-0.45862889289856
1998	-0.325808048248291
2000	-0.403075814247131
2002	-0.487907588481903
2003	-0.221860736608505
2004	-0.215896517038345
2005	-0.197672158479691
2006	-0.191516101360321
2007	-0.0502213798463345
2008	-0.0256232153624296
2009	-0.300557911396027
2010	-0.123824141919613
2011	-0.0504269637167454
2012	-0.00116499257273972
2013	0.0535053834319115
2014	-0.13524903357029
2015	-0.0933124199509621
2016	-0.0364807955920696
2017	-0.140618026256561
2018	-0.139319524168968
2019	0.032749880105257
2020	0.00868012197315693
2021	-0.0466581918299198
2022	0.0144156282767653