Year	Number
1996	-1.13137912750244
1998	-1.73167061805725
2000	-1.99520063400269
2002	-1.58324420452118
2003	-2.09539484977722
2004	-1.90860557556152
2005	-1.5181759595871
2006	-1.41766691207886
2007	-1.19806575775146
2008	-1.05679154396057
2009	-0.751153647899628
2010	-0.853916168212891
2011	-0.770114183425903
2012	-0.593262791633606
2013	-0.51926463842392
2014	-0.416824042797089
2015	-0.619956314563751
2016	-0.379699736833572
2017	-0.504938900470734
2018	-0.552077412605286
2019	-0.502156674861908
2020	-0.462322682142258
2021	-0.531467199325562
2022	-0.439423859119415