Year	Number
1996	-0.324850231409073
1998	-0.240636587142944
2000	-0.610850632190704
2002	-0.519448935985565
2003	-0.589256763458252
2004	-0.671051442623138
2005	-0.28532487154007
2006	0.0496412701904774
2007	0.0641184598207474
2008	0.0906661003828049
2009	0.0590889118611813
2010	-0.0839820206165314
2011	-0.132440626621246
2012	-0.2795430123806
2013	-0.315396577119827
2014	-0.142217665910721
2015	-0.0867874175310135
2016	0.00179059756919742
2017	0.0148969935253263
2018	-0.0304441340267658
2019	0.0231677908450365
2020	0.0892926454544067
2021	0.0710949152708054
2022	-0.0248077064752579