Year	Number
1996	-0.472254395484924
1998	-0.477870136499405
2000	-0.4926677942276
2002	-0.44015771150589
2003	-0.530747950077057
2004	-0.583505749702454
2005	-0.539499521255493
2006	-0.737334072589874
2007	-0.737870097160339
2008	-0.765909254550934
2009	-0.464862793684006
2010	-0.596871852874756
2011	-0.633263945579529
2012	-0.579664349555969
2013	-0.613801896572113
2014	-0.575114548206329
2015	-0.600650787353516
2016	-0.590742230415344
2017	-0.495695531368256
2018	-0.514392554759979
2019	-0.65516608953476
2020	-0.810555279254913
2021	-0.70553195476532
2022	-0.678810477256775