Year	Number
1996	-0.660230457782745
1998	-0.674291372299194
2000	-0.758386790752411
2002	-0.83959025144577
2003	-0.999485611915588
2004	-1.19482707977295
2005	-0.979869902133942
2006	-1.0059722661972
2007	-0.927418410778046
2008	-0.301234483718872
2009	-0.0484580174088478
2010	-0.0626933947205544
2011	-0.156640365719795
2012	-0.468655318021774
2013	-0.459633737802505
2014	-0.3722043633461
2015	-0.517903208732605
2016	-0.732977569103241
2017	-0.741155207157135
2018	-0.675655543804169
2019	-0.463619083166122
2020	-0.323318839073181
2021	-0.229317337274551
2022	-0.24384805560112