Year	Number
1996	1.51839065551758
1998	1.53684067726135
2000	1.57328855991364
2002	1.50778388977051
2003	1.54860532283783
2004	1.73924720287323
2005	1.58447277545929
2006	1.48571825027466
2007	1.51013612747192
2008	1.52016663551331
2009	1.54603838920593
2010	1.54272592067719
2011	1.61295545101166
2012	1.69035804271698
2013	1.65811014175415
2014	1.61111927032471
2015	1.5653303861618
2016	1.5646858215332
2017	1.56925737857819
2018	1.58029925823212
2019	1.55885195732117
2020	1.49814176559448
2021	1.49325942993164
2022	1.52103972434998