Year	Number
1996	0.259205192327499
1998	0.425980746746063
2000	0.41292342543602
2002	0.0508796386420727
2003	0.187651932239532
2004	0.0530563071370125
2005	-0.0299640763550997
2006	0.362777709960938
2007	0.368180990219116
2008	0.344647467136383
2009	0.342523217201233
2010	0.314489126205444
2011	0.16639056801796
2012	0.124485470354557
2013	0.155496388673782
2014	0.264593005180359
2015	0.294565856456757
2016	0.40838611125946
2017	0.381144016981125
2018	0.24830150604248
2019	0.0611070208251476
2020	-0.0731990188360214
2021	-0.242977663874626
2022	-0.348290830850601