Year	Number
1996	0.809140563011169
1998	0.876508176326752
2000	0.839712262153625
2002	0.83394581079483
2003	-0.174448385834694
2004	0.0141295678913593
2005	0.55942964553833
2006	0.619174003601074
2007	0.503692030906677
2008	0.106922201812267
2009	-0.0706491693854332
2010	0.0998813360929489
2011	0.0107107488438487
2012	-0.023023433983326
2013	0.017451100051403
2014	-0.160119161009789
2015	-0.218955487012863
2016	0.30263563990593
2017	0.309286713600159
2018	0.426162242889404
2019	0.498170644044876
2020	0.494029402732849
2021	0.429098635911942
2022	0.594402670860291