Year	%
2000	1.6073190814860676
2001	1.5265282984938855
2002	1.3627758860300214
2003	1.2804812356847077
2004	1.185802403549476
2005	1.0938809277605095
2006	0.9487925023782592
2007	0.8956992243074613
2008	0.8263640927662235
2009	0.7717042656000339
2010	0.6784845974548142
2011	0.634692533030421
2012	0.5878893534733394
2013	0.5516412379990245
2014	0.495731929856256
2015	0.46227692825963695
2016	0.4363439653094251
2017	0.40646488427400695
2018	0.3917842519721115
2019	0.3792319979728274
2020	0.32899435418915796