Year	Number
1996	-0.601866662502289
1998	-0.988236308097839
2000	-0.58789050579071
2002	-0.273943573236465
2003	-0.250177979469299
2004	0.0295107942074537
2005	-0.204009935259819
2006	-0.264316946268082
2007	-0.244918704032898
2008	-0.148591339588165
2009	-0.205200999975204
2010	-0.417924970388412
2011	-0.280602246522903
2012	-0.108322031795979
2013	-0.0607228353619576
2014	-0.198223099112511
2015	-0.120225243270397
2016	-0.22595489025116
2017	-0.0557231269776821
2018	-0.107445858418941
2019	0.0375259704887867
2020	-0.143128573894501
2021	-0.179818049073219
2022	-0.15329946577549