Year	Number
1996	1.03575432300568
1998	0.983076632022858
2000	1.05713748931885
2002	1.1171190738678
2003	0.99446302652359
2004	0.950031280517578
2005	0.955872654914856
2006	1.05206739902496
2007	1.06665575504303
2008	1.08403408527374
2009	1.06802761554718
2010	1.02339065074921
2011	1.0535831451416
2012	1.02202355861664
2013	0.980822682380676
2014	1.01999497413635
2015	1.03160166740417
2016	1.04664146900177
2017	1.05624771118164
2018	1.01594293117523
2019	1.04695701599121
2020	0.903132319450378
2021	0.856516122817993
2022	0.846960842609406