Year	Number
1996	1.15766596794128
1998	1.15295279026031
2000	1.12659859657288
2002	1.10116672515869
2003	1.09160125255585
2004	1.15784680843353
2005	1.02187347412109
2006	1.02123284339905
2007	0.991429924964905
2008	1.01344287395477
2009	1.01708793640137
2010	1.00022184848785
2011	0.990145206451416
2012	1.00228774547577
2013	1.00988590717316
2014	0.948299586772919
2015	0.962299764156342
2016	1.27648758888245
2017	1.33000528812408
2018	1.32705497741699
2019	1.30727672576904
2020	1.47028541564941
2021	1.47174787521362
2022	1.21950936317444