Year	Number
1996	-1.26249313354492
1998	-1.26437652111053
2000	-1.27798712253571
2002	-0.903619349002838
2003	-0.904821991920471
2004	-0.738363146781921
2005	-0.948700785636902
2006	-0.536948502063751
2007	-0.464271187782288
2008	-0.491749674081802
2009	-0.474458634853363
2010	-0.430014491081238
2011	-0.325049340724945
2012	-0.332835763692856
2013	-0.298619896173477
2014	-0.0945554226636887
2015	-0.0758465304970741
2016	-0.126964136958122
2017	-0.179856866598129
2018	-0.170304462313652
2019	-0.14376026391983
2020	-0.12273895740509
2021	-0.11491896212101
2022	-0.113290347158909