Year	%
2000	1.6364212535568
2001	1.62230915639958
2002	1.53971682510686
2003	1.50405577374372
2004	1.25999285222664
2005	1.27461567467673
2006	1.07564958177428
2007	1.14801847322421
2008	1.12212781460757
2009	0.916116333099713
2010	0.818774584262549
2011	0.820321966112963
2012	0.565712877425469
2013	0.523336125321658
2014	0.523940494156861
2015	0.506461434215998
2016	0.469920739697974
2017	0.439874631028783
2018	0.413138460832807
2019	0.377718035968747
2020	0.254152396842147