Year	Number
1996	-0.636936128139496
1998	-0.599871158599854
2000	-0.42815425992012
2002	-0.712642133235931
2003	-0.19849793612957
2004	-0.55611526966095
2005	-0.42787379026413
2006	-0.244788363575935
2007	0.121599525213242
2008	0.305029034614563
2009	0.297784507274628
2010	0.327387809753418
2011	0.578812718391418
2012	0.63056617975235
2013	0.60695880651474
2014	0.424936980009079
2015	0.26302033662796
2016	0.421116173267365
2017	0.481253504753113
2018	0.518160223960876
2019	0.766231834888458
2020	0.717011868953705
2021	0.618161380290985
2022	0.650825500488281