Year	Number
1996	0.299853712320328
1998	0.298557758331299
2000	0.287548869848251
2002	0.453831791877747
2003	0.726204633712769
2004	0.129654556512833
2005	0.404883742332459
2006	0.314057976007462
2007	0.0624813102185726
2008	0.0831067636609077
2009	0.592065155506134
2010	0.628308355808258
2011	0.606116414070129
2012	-0.24322135746479
2013	-0.267653346061707
2014	-0.330540835857391
2015	-0.0673485621809959
2016	-0.0613188408315182
2017	-0.0545359142124653
2018	-0.0683546885848045
2019	-0.325315743684769
2020	-0.29005491733551
2021	-0.534086644649506
2022	-0.531910479068756