Year	Number
1996	0.85732102394104
1998	0.945576548576355
2000	1.01605880260468
2002	0.989593505859375
2003	0.938781797885895
2004	0.90867418050766
2005	0.877258121967316
2006	1.09397459030151
2007	1.10558974742889
2008	1.20663857460022
2009	1.20613396167755
2010	1.2096072435379
2011	1.06531310081482
2012	1.09355938434601
2013	1.03002083301544
2014	1.07491314411163
2015	1.01087772846222
2016	0.693356812000275
2017	0.854259431362152
2018	0.721238017082214
2019	0.727045774459839
2020	0.547705590724945
2021	0.606050729751587
2022	0.570798516273499