Year	%
2000	11.876837271613688
2001	11.557662954555028
2002	11.350134356690406
2003	11.157423910938132
2004	10.75421122809711
2005	10.598667752189519
2006	10.325401477503492
2007	10.192890064923013
2008	10.034684188119167
2009	9.926459945420676
2010	9.715593586547465
2011	9.616436481872583
2012	9.550631331045789
2013	9.388170565388265
2014	9.19664924133414
2015	9.251157767609614
2016	9.085519545480333
2017	9.004476212815318
2018	8.90737760562654
2019	8.76324239873503