Year	Number
1996	-0.367461204528809
1998	0.194383829832077
2000	0.0900903418660164
2002	0.358549177646637
2003	0.356259912252426
2004	0.0703879743814468
2005	0.190631836652756
2006	0.207937806844711
2007	0.647996783256531
2008	0.626638472080231
2009	0.776816248893738
2010	0.52297180891037
2011	-0.338570564985275
2012	-0.408455014228821
2013	-0.402473896741867
2014	0.0360181555151939
2015	-0.0383530743420124
2016	0.00146297342143953
2017	0.0243722945451736
2018	-0.0526988133788109
2019	-0.167979881167412
2020	-0.257630288600922
2021	-0.231327518820763
2022	-0.356833428144455