Year	Number
1996	1.02564632892609
1998	1.04103910923004
2000	1.03950023651123
2002	1.015181183815
2003	0.890418648719788
2004	0.404390901327133
2005	1.1910754442215
2006	1.1618572473526
2007	1.15614402294159
2008	1.07647836208344
2009	1.10033774375916
2010	1.16569805145264
2011	1.12440323829651
2012	1.12443590164185
2013	1.12434530258179
2014	1.12193894386292
2015	0.847469806671143
2016	1.00659966468811
2017	0.995658814907074
2018	0.863463044166565
2019	0.815502345561981
2020	0.813230156898499
2021	0.773462951183319
2022	0.764573812484741