Year	Number
1996	1.31172633171082
1998	1.24313056468964
2000	0.886789321899414
2002	1.30383324623108
2003	1.18649446964264
2004	1.08161342144012
2005	1.09281122684479
2006	1.08572900295258
2007	1.0986293554306
2008	1.14937436580658
2009	0.936905801296234
2010	0.866508841514587
2011	0.969209671020508
2012	0.935110688209534
2013	0.882251679897308
2014	0.965773403644562
2015	0.947492003440857
2016	0.979141891002655
2017	0.866364181041718
2018	0.894077658653259
2019	0.801483511924744
2020	0.701404273509979
2021	0.755461394786835
2022	0.706639647483826