Year	Number
1996	0.187061369419098
1998	0.139225751161575
2000	0.0914868861436844
2002	-0.511592388153076
2003	-0.435169965028763
2004	-0.393378406763077
2005	-0.3428595662117
2006	-0.291285037994385
2007	-0.338424056768417
2008	-0.336699634790421
2009	-0.321954697370529
2010	-0.265738725662231
2011	-0.187364369630814
2012	-0.285973221063614
2013	-0.304272919893265
2014	-0.325509160757065
2015	-0.283773303031921
2016	-0.208374217152596
2017	-0.224058091640472
2018	-0.230746984481812
2019	-0.113833971321583
2020	-0.0465457551181316
2021	-0.0529801920056343
2022	-0.0233815424144268