Year	Number
1996	0.165690049529076
1998	0.328712493181229
2000	-0.0280386935919523
2002	-0.228479072451591
2003	-0.0342199839651585
2004	0.015197392553091
2005	-0.0979790613055229
2006	-0.0339163094758987
2007	-0.0125325033441186
2008	-0.123509347438812
2009	-0.294032037258148
2010	-0.1117919459939
2011	-0.0723610669374466
2012	-0.206967011094093
2013	-0.253538548946381
2014	-0.110760383307934
2015	-0.0493510514497757
2016	0.219068825244904
2017	0.135000482201576
2018	0.0280940532684326
2019	-0.120677568018436
2020	-0.253818213939667
2021	-0.389672070741653
2022	-0.282877296209335