Year	%
2000	5.2657594788985
2001	4.44241115454654
2002	4.09208660433926
2003	3.61768583438329
2004	3.06656707954361
2005	2.75603242709754
2006	2.3589848754114
2007	2.28495880223054
2008	2.13821497134058
2009	1.859292539443
2010	1.79381268792421
2011	1.71741560818771
2012	1.42872215913236
2013	1.40860444099768
2014	1.34102472142072
2015	1.36202303014984
2016	1.2780174449277
2017	1.1112982379149
2018	1.13888105712877
2019	1.13976028080797
2020	1.05331221119194