Year	Number
1996	-0.183629289269447
1998	-0.219085738062859
2000	-0.229407846927643
2002	-0.337844789028168
2003	-0.366576313972473
2004	-0.386468946933746
2005	-0.391905188560486
2006	-0.198544204235077
2007	-0.136533141136169
2008	-0.109230503439903
2009	-0.110996946692467
2010	-0.0236956626176834
2011	-0.317042857408524
2012	0.01908940076828
2013	0.0580503158271313
2014	0.193452343344688
2015	0.155576512217522
2016	0.214581698179245
2017	0.210747718811035
2018	0.273761808872223
2019	0.261315554380417
2020	0.114084966480732
2021	0.465890735387802
2022	0.583050787448883