Year	Number
2004	1.16596531867981
2005	1.26966309547424
2006	1.25131320953369
2007	1.26187098026276
2008	1.27677536010742
2009	1.10914754867554
2010	1.12129557132721
2011	1.10294651985168
2012	1.09523594379425
2013	1.11940670013428
2014	1.01423156261444
2015	1.24846112728119
2016	1.23273515701294
2017	1.23937666416168
2018	1.2074294090271
2019	1.17470288276672
2020	1.19939172267914
2021	0.801610887050629
2022	0.756784737110138