Year	Number
1996	1.12921118736267
1998	1.35599553585052
2000	1.32828283309937
2002	1.31682515144348
2003	1.3489111661911
2004	1.33718907833099
2005	1.32761585712433
2006	1.17766547203064
2007	1.07903242111206
2008	1.17877197265625
2009	1.05494809150696
2010	1.16003704071045
2011	1.16321241855621
2012	1.17040634155273
2013	0.926997601985931
2014	0.689561665058136
2015	0.631589710712433
2016	0.570366203784943
2017	0.5102778673172
2018	0.612849295139313
2019	0.666526734828949
2020	0.71118026971817
2021	0.71550315618515
2022	0.68531209230423