Year	Number
1996	0.449250608682632
1998	0.197645246982574
2000	0.0084470622241497
2002	0.0704177469015121
2003	0.0532155409455299
2004	-0.115211933851242
2005	0.0727133899927139
2006	-0.244654402136803
2007	0.277233392000198
2008	0.537688016891479
2009	0.485472977161407
2010	0.334105610847473
2011	0.234129071235657
2012	0.428087890148163
2013	0.249095499515533
2014	0.0742060318589211
2015	-0.0895711407065392
2016	-0.195148065686226
2017	-0.128823503851891
2018	-0.0129793277010322
2019	-0.178149864077568
2020	-0.201663821935654
2021	-0.332011014223099
2022	-0.100280806422234