Year	Number
1996	0.468430697917938
1998	0.309278875589371
2000	0.262206673622131
2002	0.306561231613159
2003	0.211418956518173
2004	0.212290197610855
2005	0.149778127670288
2006	0.0309586375951767
2007	0.211472004652023
2008	0.270571917295456
2009	0.32113441824913
2010	0.298928886651993
2011	0.283398628234863
2012	0.47439906001091
2013	0.456511080265045
2014	0.363258302211761
2015	0.306994050741196
2016	0.284244060516357
2017	0.222507447004318
2018	0.352696746587753
2019	0.347733318805695
2020	0.196720212697983
2021	0.224117517471313
2022	0.0532664284110069