Year	Number
1996	0.289152532815933
1998	0.344616889953613
2000	0.357008874416351
2002	0.401489078998566
2003	0.22000153362751
2004	0.217612057924271
2005	0.268494963645935
2006	0.252376884222031
2007	0.301246494054794
2008	0.262841045856476
2009	0.2748102247715
2010	0.308642894029617
2011	0.26503998041153
2012	0.228043004870415
2013	0.113353908061981
2014	0.0629153475165367
2015	0.0384895987808704
2016	0.135692074894905
2017	0.23263481259346
2018	0.134128853678703
2019	0.0146971046924591
2020	-0.154578611254692
2021	-0.0332559123635292
2022	-0.0693471655249596