Year	Number
1996	-0.731249630451202
1998	-0.759632170200348
2000	-0.649043917655945
2002	-0.830014586448669
2003	-0.955924153327942
2004	-1.10269165039063
2005	-1.06442594528198
2006	-0.948749899864197
2007	-0.930305898189545
2008	-0.833383977413177
2009	-0.896127939224243
2010	-0.935580134391785
2011	-0.893909215927124
2012	-0.948060035705566
2013	-0.984186470508575
2014	-0.858331799507141
2015	-0.819108128547668
2016	-0.652705848217011
2017	-0.732762277126312
2018	-0.619138240814209
2019	-0.591685473918915
2020	-0.674063563346863
2021	-0.586597383022308
2022	-0.55883401632309