Year	Number
1996	0.687231183052063
1998	0.839022397994995
2000	0.566399753093719
2002	0.566648781299591
2003	0.613744556903839
2004	0.574701726436615
2005	0.613131701946259
2006	0.608323812484741
2007	0.545622229576111
2008	0.533641874790192
2009	0.554204344749451
2010	0.523346245288849
2011	0.520742893218994
2012	0.501116394996643
2013	0.482290118932724
2014	0.473105400800705
2015	0.480548501014709
2016	0.558559715747833
2017	0.554904460906982
2018	0.546445190906525
2019	0.597126185894012
2020	0.642406761646271
2021	0.664211511611938
2022	0.646616280078888