Year	Number
1996	-1.08876645565033
1998	-0.883071959018707
2000	-1.01074934005737
2002	-0.614207327365875
2003	-0.674277365207672
2004	-0.559222877025604
2005	-0.446233421564102
2006	-0.438161790370941
2007	-0.537276387214661
2008	-0.603184521198273
2009	-0.534546136856079
2010	-0.395901709794998
2011	-0.520578742027283
2012	-0.447385340929031
2013	-0.430986166000366
2014	-0.339201897382736
2015	-0.410823673009872
2016	-0.464160442352295
2017	-0.536838710308075
2018	-0.488373935222626
2019	-0.56773042678833
2020	-0.573433458805084
2021	-0.653295338153839
2022	-0.513090252876282