Year	Number
1996	-1.43498563766479
1998	-0.892448484897614
2000	-1.03144466876984
2002	-1.26985847949982
2003	-1.44594633579254
2004	-1.29151952266693
2005	-0.417990475893021
2006	-0.167643144726753
2007	-0.142709940671921
2008	-0.184938192367554
2009	-0.163391470909119
2010	-0.211385726928711
2011	-0.256350547075272
2012	-0.306616246700287
2013	-0.387322694063187
2014	-0.276458382606506
2015	-0.230453833937645
2016	-0.106433168053627
2017	0.0427234321832657
2018	-0.0270221866667271
2019	-0.0745187401771545
2020	-0.0721718743443489
2021	-0.0175244212150574
2022	-0.0189059153199196