Year	Number
1996	1.26196682453156
1998	1.15530693531036
2000	1.08776450157166
2002	1.19338965415955
2003	1.18172955513
2004	1.21912789344788
2005	1.22012770175934
2006	1.27664840221405
2007	1.33180058002472
2008	1.36799836158752
2009	1.36015510559082
2010	1.42102324962616
2011	1.23100304603577
2012	1.12454509735107
2013	0.910857200622559
2014	1.09409928321838
2015	1.04765045642853
2016	1.04042482376099
2017	1.01826858520508
2018	0.862575232982636
2019	0.999724805355072
2020	0.993247628211975
2021	0.845392525196075
2022	0.773753821849823