Year	Number
1996	-0.220460131764412
1998	-0.339505791664124
2000	0.18410162627697
2002	0.327800273895264
2003	0.00421393429860473
2004	-0.275992810726166
2005	-0.263379752635956
2006	-0.294911116361618
2007	-0.3579480946064
2008	-0.313424706459045
2009	0.163664221763611
2010	0.0134759107604623
2011	-0.132575422525406
2012	0.0459616407752037
2013	-0.258553296327591
2014	-0.070290133357048
2015	-0.331864446401596
2016	-0.381035059690475
2017	-0.480093955993652
2018	-0.459640145301819
2019	-0.714393615722656
2020	-0.445607244968414
2021	-0.419696539640427
2022	-0.331465899944305