Year	Number
1996	-0.124192699790001
1998	-0.0990643203258514
2000	-0.14284160733223
2002	-0.231615513563156
2003	-0.19557811319828
2004	-0.591200113296509
2005	-0.321755260229111
2006	-0.90061366558075
2007	-0.924703121185303
2008	-1.00329864025116
2009	-0.925685346126556
2010	-0.985421478748322
2011	-0.961429834365845
2012	-0.914369821548462
2013	-0.993353545665741
2014	-0.990728557109833
2015	-1.06688117980957
2016	-0.852689743041992
2017	-0.804093480110168
2018	-0.825167000293732
2019	-0.609396576881409
2020	-0.838932752609253
2021	-0.775175809860229
2022	-0.701024174690247