Year	Number
1995	0.6368811194042328
1996	1.1150165335267928
1997	0.7553738533532265
1998	0.42486893870175085
1999	0.8305577578734811
2000	1.9289164748897765
2001	1.0605129861975107
2002	0.5159504910622434
2003	0.7220489412369577
2004	1.2583573552401688
2005	1.9979422054762386
2006	4.324699670860851
2007	3.891573437511127
2008	3.7448092859589104
2009	3.361138202756804
2010	5.410918330694544
2011	6.030560288283903
2012	6.614946281070621
2013	6.288486303900883
2014	5.146290922031239
2015	6.4820456906484125
2016	9.083871204900777
2017	5.8181869184485615
2018	5.412640154086431
2019	6.425094289966637
2020	8.02614772310755
2021	6.949154146489741
2022	4.376832867486298
2023	5.091145812381903