Year	Number
1996	0.187617555260658
1998	0.302315533161163
2000	0.331546425819397
2002	0.295856952667236
2003	0.361106097698212
2004	0.376263976097107
2005	0.296854168176651
2006	0.392584353685379
2007	0.426548063755035
2008	0.439304322004318
2009	0.316913247108459
2010	0.326757907867432
2011	0.321247637271881
2012	0.306071490049362
2013	0.293946117162704
2014	0.339087873697281
2015	0.322182655334473
2016	0.310822695493698
2017	0.323710024356842
2018	0.322514206171036
2019	0.320448726415634
2020	0.33969846367836
2021	0.342920124530792
2022	0.35089573264122