Year	Number
1996	0.201410368084908
1998	0.242999538779259
2000	0.000508486176840961
2002	0.240923017263412
2003	0.298580944538116
2004	0.178830370306969
2005	-0.218004077672958
2006	-0.316718906164169
2007	-0.340681046247482
2008	-0.334849029779434
2009	-0.263375490903854
2010	-0.364841192960739
2011	-0.262269258499146
2012	-0.367212653160095
2013	-0.362178117036819
2014	-0.330959737300873
2015	-0.390086352825165
2016	-0.226150915026665
2017	-0.316355377435684
2018	-0.278373807668686
2019	-0.257835924625397
2020	-0.267986297607422
2021	-0.249986231327057
2022	-0.187423229217529