Year	Number
1996	1.00316429138184
1998	1.10321736335754
2000	1.01306200027466
2002	1.0480192899704
2003	1.15667390823364
2004	1.19141495227814
2005	1.09756934642792
2006	0.965482771396637
2007	0.983873903751373
2008	0.928211510181427
2009	0.891443252563477
2010	0.897718012332916
2011	0.820455014705658
2012	0.700790524482727
2013	0.687237501144409
2014	0.618778228759766
2015	0.651559412479401
2016	0.66856586933136
2017	0.658502697944641
2018	0.74184650182724
2019	0.810959219932556
2020	0.963265836238861
2021	0.945831060409546
2022	0.953022003173828