Year	%
2000	1.283466
2001	1.437471
2002	1.447481
2003	1.32337
2004	1.385913
2005	1.159069
2006	1.16832
2007	1.108436
2008	1.051244
2009	1.282002
2010	1.131131
2011	1.118829
2012	1.123079
2013	1.061322
2014	1.084267
2015	1.073302
2016	0.916684
2017	1.166567
2018	1.14076
2019	1.191881
2020	8.2115
2021	0.0163338