Year	Number
1996	-0.202153459191322
1998	-0.161209627985954
2000	0.839712262153625
2002	0.83394581079483
2003	0.833284139633179
2004	0.826330423355103
2005	0.49872300028801
2006	0.627963364124298
2007	0.873276591300964
2008	0.790415227413177
2009	0.33556205034256
2010	0.404105573892593
2011	0.172931656241417
2012	0.106395050883293
2013	0.244046077132225
2014	-0.20002493262291
2015	0.00173571065533906
2016	0.117478735744953
2017	0.287800669670105
2018	0.163996770977974
2019	0.458869159221649
2020	0.595379114151001
2021	0.769646406173706
2022	0.725977838039398