Year	Number
2004	-0.0281551741063595
2005	0.114489793777466
2006	-0.0318083874881268
2007	-0.533418953418732
2008	-0.510507524013519
2009	-0.356076508760452
2010	-0.469835221767426
2011	-0.803260207176209
2012	-0.643046975135803
2013	-0.568209290504456
2014	-0.515400052070618
2015	-0.160680666565895
2016	-0.0465805158019066
2017	0.416537791490555
2018	0.163868218660355
2019	0.0971257835626602
2020	0.358195006847382
2021	0.30223348736763
2022	0.379839152097702