Year	Number
1996	0.155518606305122
1998	0.353770107030869
2000	0.189972907304764
2002	0.140369892120361
2003	-0.0564173422753811
2004	-0.170450285077095
2005	-0.156710430979729
2006	0.0764636099338531
2007	0.0422239750623703
2008	0.0029617075342685
2009	0.00694658420979977
2010	-0.0392411425709724
2011	-0.0682377889752388
2012	-0.0815852954983711
2013	-0.0689930468797684
2014	-0.0263046491891146
2015	-0.0046573942527175
2016	-0.0363983437418938
2017	-0.0246251747012138
2018	-0.0593984983861446
2019	-0.116986528038979
2020	-0.0851807668805122
2021	-0.114208891987801
2022	-0.19810938835144