Year	Number
1996	-0.619082868099213
1998	-0.477520346641541
2000	-0.509562849998474
2002	-0.619889736175537
2003	-0.419792979955673
2004	-0.592966556549072
2005	-0.723472833633423
2006	-0.72921222448349
2007	-0.6148881316185
2008	-0.769183158874512
2009	-0.743443965911865
2010	-0.747090220451355
2011	-0.673657119274139
2012	-0.575278580188751
2013	-0.739454984664917
2014	-0.719099462032318
2015	-0.989859938621521
2016	-0.936807751655579
2017	-0.745486438274384
2018	-0.75130432844162
2019	-0.765243172645569
2020	-0.787312388420105
2021	-0.678520202636719
2022	-0.674558699131012