Year	Number
1996	-1.06467998027802
1998	-0.883071959018707
2000	-0.834016025066376
2002	-0.554945647716522
2003	-0.665495097637177
2004	-0.25116753578186
2005	-0.360925853252411
2006	-0.238502889871597
2007	-0.255289196968079
2008	-0.249734953045845
2009	-0.0702016353607178
2010	-0.0760836377739906
2011	-0.132481977343559
2012	-0.173352405428886
2013	-0.178427875041962
2014	0.00223585497587919
2015	-0.00153347186278552
2016	-0.0382016189396381
2017	0.0732660889625549
2018	0.0746255144476891
2019	-0.0166272595524788
2020	-0.0427990965545177
2021	0.0126691851764917
2022	0.0656684786081314