Year	Number
1996	0.333532422780991
1998	0.339321404695511
2000	0.390961945056915
2002	0.336637645959854
2003	0.31748366355896
2004	0.573030769824982
2005	0.533180177211761
2006	0.631312012672424
2007	0.543636023998261
2008	0.573908567428589
2009	0.589427828788757
2010	0.495849043130875
2011	0.51117467880249
2012	0.640056967735291
2013	0.618955671787262
2014	0.558731198310852
2015	0.595008313655853
2016	0.633674025535584
2017	0.608596861362457
2018	0.579138517379761
2019	0.731873512268066
2020	0.742793262004852
2021	0.730730891227722
2022	0.721560716629028