Year	Number
1996	1.79586124420166
1998	1.75143575668335
2000	1.8001868724823
2002	1.84246826171875
2003	1.88671100139618
2004	1.87256228923798
2005	1.79775130748749
2006	1.85117638111115
2007	1.89182782173157
2008	1.91915678977966
2009	1.9582816362381
2010	1.93030881881714
2011	1.91803658008575
2012	1.92827761173248
2013	1.95055162906647
2014	1.97517240047455
2015	1.99026310443878
2016	1.9524188041687
2017	1.81789696216583
2018	1.78393721580505
2019	1.79192125797272
2020	1.76685619354248
2021	1.70026206970215
2022	1.69006848335266