Year	Number
1996	-0.282953977584839
1998	-0.413895130157471
2000	-0.165970459580421
2002	-0.278718441724777
2003	-0.346831738948822
2004	-0.201959788799286
2005	-0.232234254479408
2006	-0.601163983345032
2007	-0.656928777694702
2008	-0.606169164180756
2009	-0.614996731281281
2010	-0.644749224185944
2011	-0.634227335453033
2012	-0.70023500919342
2013	-0.73164564371109
2014	-0.720965027809143
2015	-0.806876540184021
2016	-0.809735655784607
2017	-0.808564722537994
2018	-0.782223165035248
2019	-0.852389216423035
2020	-0.905710816383362
2021	-1.09135901927948
2022	-1.10264194011688