Year	Number
2004	0.839443206787109
2005	0.442666381597519
2006	0.508818447589874
2007	0.483246594667435
2008	0.500850796699524
2009	-0.143221497535706
2010	0.339058101177216
2011	0.860623061656952
2012	0.67957615852356
2013	0.846709191799164
2014	1.16425490379333
2015	1.22000181674957
2016	0.975613653659821
2017	0.981489479541779
2018	0.955986976623535
2019	1.0513995885849
2020	1.00336503982544
2021	0.476192206144333
2022	0.563698709011078