Year	Number
1996	0.323474794626236
1998	0.343518048524857
2000	-0.276727378368378
2002	0.00690796505659819
2003	0.00997454486787319
2004	0.0683883503079414
2005	0.103356398642063
2006	0.0516839437186718
2007	-0.621160268783569
2008	-0.574613034725189
2009	-0.865079581737518
2010	-0.744324743747711
2011	-0.711457431316376
2012	-0.671125769615173
2013	-0.725795090198517
2014	-0.514017462730408
2015	-0.363319486379623
2016	-0.0898485407233238
2017	-0.0816029757261276
2018	0.17677891254425
2019	0.422631531953812
2020	0.195874199271202
2021	0.298335909843445
2022	0.321682155132294