Year	Number
1996	-0.142714694142342
1998	-0.122646808624268
2000	-0.0945855379104614
2002	0.247913658618927
2003	-0.141306817531586
2004	0.0232223942875862
2005	-0.0353756621479988
2006	-0.373094290494919
2007	-0.51429945230484
2008	-0.500159680843353
2009	-0.490049093961716
2010	-0.641386091709137
2011	-0.503729224205017
2012	-0.25842273235321
2013	-0.188867226243019
2014	0.0588305070996284
2015	0.0312388930469751
2016	-0.0243894848972559
2017	-0.114238142967224
2018	-0.0468400530517101
2019	-0.00381421996280551
2020	-0.00738583691418171
2021	0.0421113222837448
2022	-0.0287281088531017