Year	Number
1996	-0.0910280793905258
1998	0.575025260448456
2000	0.377964615821838
2002	0.467512369155884
2003	0.173525497317314
2004	0.00363073358312249
2005	0.14727059006691
2006	0.394421190023422
2007	0.357635468244553
2008	0.369860708713531
2009	0.353678971529007
2010	0.360091060400009
2011	0.301750302314758
2012	0.379833996295929
2013	0.170710384845734
2014	0.0785408988595009
2015	0.010424641892314
2016	0.0682793706655502
2017	0.321378797292709
2018	0.444267064332962
2019	0.56119829416275
2020	0.40158087015152
2021	0.364647597074509
2022	0.246252059936523