Year	%
2000	5.46229232697558
2001	5.330329741545124
2002	5.221346350821755
2003	5.071050003109617
2004	4.980942985647169
2005	4.8932533029784775
2006	4.829095925752572
2007	4.795299068988841
2008	4.7969705329536945
2009	4.78328579515839
2010	4.769750161210355
2011	4.560671737732782
2012	4.509290815439517
2013	4.4724448724481665
2014	4.43418376132004
2015	4.25901344598467
2016	4.199840317989211
2017	4.105004903280621
2018	4.0470416567907375
2019	3.920833244077094
2020	3.7141147125045704