Year	Number
1996	-0.266413539648056
1998	0.123369120061398
2000	-0.48681977391243
2002	-0.561520338058472
2003	-0.436319321393967
2004	-0.554896175861359
2005	-0.454965949058533
2006	-0.734118461608887
2007	-0.559686779975891
2008	-0.633931934833527
2009	-0.62998104095459
2010	-0.458965748548508
2011	-0.434282511472702
2012	-0.499614059925079
2013	-0.45660674571991
2014	-0.136097595095634
2015	-0.139641344547272
2016	-0.0342189259827137
2017	-0.0494407266378403
2018	-0.191917717456818
2019	-0.254104405641556
2020	-0.13758060336113
2021	-0.137163653969765
2022	0.0270621627569199