Year	Number
1996	-0.206821382045746
1998	-0.00500163901597261
2000	0.0375185273587704
2002	0.126366227865219
2003	0.0662459284067154
2004	-0.0046601896174252
2005	-0.39314877986908
2006	-0.270870000123978
2007	0.0480266362428665
2008	-0.0773959755897522
2009	-0.0147166308015585
2010	-0.0760726928710938
2011	-0.479735821485519
2012	-0.407692342996597
2013	-0.431911140680313
2014	-0.500559747219086
2015	-0.480209201574326
2016	-0.494323074817657
2017	-0.270877748727798
2018	-0.377810627222061
2019	-0.274407118558884
2020	-0.0405771993100643
2021	-0.346043050289154
2022	-0.249723330140114