Year	Number
1996	0.724004507064819
1998	0.539632081985474
2000	0.491936683654785
2002	0.693675577640533
2003	0.918948590755463
2004	1.17205035686493
2005	1.28448736667633
2006	1.26451897621155
2007	0.56852650642395
2008	0.720669388771057
2009	0.803496658802032
2010	0.742221653461456
2011	0.826495349407196
2012	0.776309490203857
2013	0.784624874591827
2014	1.06803858280182
2015	0.960772633552551
2016	1.1060882806778
2017	1.10279309749603
2018	1.07745289802551
2019	1.0653510093689
2020	1.01341140270233
2021	0.797127723693848
2022	0.86481773853302