Year	Number
1996	-0.68858790397644
1998	-0.477520346641541
2000	-0.142010897397995
2002	-0.210034415125847
2003	-0.161743089556694
2004	-0.0464662872254848
2005	-0.0602631121873856
2006	-0.332950234413147
2007	-0.28100261092186
2008	-0.129181608557701
2009	-0.0790900066494942
2010	-0.1087242141366
2011	-0.123884543776512
2012	-0.0128803355619311
2013	-0.0177134405821562
2014	-0.176725581288338
2015	-0.378639221191406
2016	-0.371616750955582
2017	-0.648573517799377
2018	-0.686438202857971
2019	-0.626823604106903
2020	-0.578497290611267
2021	-0.680655121803284
2022	-0.943955838680267