Year	Number
1996	-0.129760310053825
1998	-0.615934073925018
2000	-0.289199769496918
2002	-0.219570532441139
2003	-0.0332707948982716
2004	0.0132019305601716
2005	0.000233756712987088
2006	-0.0640953183174133
2007	-0.0533245801925659
2008	-0.0412864089012146
2009	-0.0555260591208935
2010	-0.0848165079951286
2011	-0.136850699782372
2012	-0.206933528184891
2013	-0.251326382160187
2014	-0.338407427072525
2015	-0.367709815502167
2016	-0.607145011425018
2017	-0.705824077129364
2018	-0.846058666706085
2019	-0.834239602088928
2020	-0.860568761825562
2021	-0.859696805477142
2022	-0.9266077876091