Year	Number
2004	1.28138864040375
2005	1.28759801387787
2006	1.27981781959534
2007	1.24660122394562
2008	1.27092468738556
2009	1.49665641784668
2010	1.24645340442657
2011	1.23643040657043
2012	1.24758815765381
2013	1.22132623195648
2014	0.887889862060547
2015	0.848053455352783
2016	0.853404819965363
2017	0.875804901123047
2018	1.01347315311432
2019	0.98783677816391
2020	1.07522451877594
2021	1.08404016494751
2022	1.10533332824707