Year	Number
1996	-0.891807198524475
1998	-0.855878174304962
2000	-0.993294954299927
2002	-0.930503964424133
2003	-0.702457308769226
2004	-0.724424123764038
2005	-0.597283959388733
2006	-0.445383280515671
2007	-0.486063897609711
2008	-0.509934663772583
2009	-0.509125173091888
2010	-0.518370270729065
2011	-0.525404512882233
2012	-0.49354612827301
2013	-0.551976680755615
2014	-0.585784256458282
2015	-0.567804515361786
2016	-0.647862374782562
2017	-0.588405191898346
2018	-0.680717766284943
2019	-0.645076036453247
2020	-0.712254166603088
2021	-0.82360178232193
2022	-0.804154872894287