Year	Number
1996	-0.376664608716965
1998	-0.424727380275726
2000	-0.527763843536377
2002	-0.390916764736176
2003	-0.180311486124992
2004	-0.130423247814178
2005	-0.123802177608013
2006	-0.222235888242722
2007	-0.166308999061584
2008	-0.117958433926105
2009	-0.117453590035439
2010	-0.137619033455849
2011	-0.165708616375923
2012	-0.240807324647903
2013	-0.16249717772007
2014	-0.288721323013306
2015	-0.329065322875977
2016	-0.39462348818779
2017	-0.394216030836105
2018	-0.405376076698303
2019	-0.343976616859436
2020	-0.278625726699829
2021	-0.249046683311462
2022	-0.218995496630669