Year	Number
2008	1.01208281517029
2009	0.430509388446808
2010	-1.04482114315033
2011	-1.04214704036713
2012	-1.0385023355484
2013	-0.966146647930145
2014	-0.340774536132813
2015	-0.200406447052956
2016	-0.285933345556259
2017	-0.244493424892426
2018	-0.675402104854584
2019	-0.348640084266663
2020	-0.279240250587463
2021	-0.113625250756741
2022	-0.252448588609695