Year	Number
1996	-1.8453323841095
1998	-2.03788757324219
2000	-1.69159471988678
2002	-1.6515132188797
2003	-1.11252212524414
2004	-1.18624520301819
2005	-1.00021243095398
2006	-0.684061944484711
2007	-0.360214412212372
2008	-0.327669590711594
2009	-0.506896436214447
2010	-0.272093862295151
2011	-0.17711777985096
2012	-0.230615198612213
2013	-0.110951617360115
2014	-0.313469648361206
2015	0.00251837843097746
2016	-0.0665186643600464
2017	0.078270360827446
2018	0.101642534136772
2019	0.056940533220768
2020	0.0694212764501572
2021	0.0719058215618134
2022	0.0305139776319265