Year	Number
1996	-0.215370371937752
1998	0.0906790643930435
2000	0.329205334186554
2002	0.293994128704071
2003	-0.180753871798515
2004	-0.0691009759902954
2005	-0.0337608754634857
2006	-0.168158024549484
2007	-0.00727073149755597
2008	0.0393931120634079
2009	-0.00711627723649144
2010	0.0588422268629074
2011	0.111001193523407
2012	0.234583973884583
2013	-0.0336589030921459
2014	-0.0245900042355061
2015	-0.0204960480332375
2016	-0.104568757116795
2017	-0.263820618391037
2018	-0.389219522476196
2019	-0.120268002152443
2020	-0.115019135177135
2021	-0.0915462896227837
2022	-0.153124496340752