Year	Number
1996	0.0937392041087151
1998	0.109475560486317
2000	0.139502242207527
2002	0.302805960178375
2003	0.693029940128326
2004	0.161766871809959
2005	0.360231071710587
2006	0.148469686508179
2007	0.34100878238678
2008	0.521403908729553
2009	0.489347755908966
2010	-0.0949900969862938
2011	-0.0877690091729164
2012	0.0686152204871178
2013	0.00595916621387005
2014	0.179782152175903
2015	0.110905699431896
2016	0.135706260800362
2017	-0.057209238409996
2018	0.353457748889923
2019	0.344906747341156
2020	-0.887608170509338
2021	-0.754245221614838
2022	-0.79387354850769