Year	%
2000	1.7896806405033021
2001	1.7242616198468916
2002	1.5929548509784206
2003	1.5147632431445628
2004	1.4428405242731026
2005	1.3693045395964907
2006	1.268971945770759
2007	1.2341543388009482
2008	1.2034199976354794
2009	1.1628811078430095
2010	1.0962530440787184
2011	1.038132237955568
2012	0.9978988028536171
2013	0.9732150667145086
2014	0.9333761398384359
2015	0.8893487916598851
2016	0.8708329169420324
2017	0.8449590071656065
2018	0.8326818288325458
2019	0.8125976951009481
2020	0.7499888365508945