Year	%
2000	10.293050898586632
2001	10.052941314756008
2002	9.879469078279607
2003	9.739149529339855
2004	9.350048826720903
2005	9.217575826977026
2006	8.950108212384363
2007	8.86798743852767
2008	8.78073906229862
2009	8.680835447050583
2010	8.522889864064059
2011	8.496131782752583
2012	8.41753823959218
2013	8.286138946585144
2014	8.10056608917607
2015	8.155566697663316
2016	8.059134421192228
2017	7.971163262033945
2018	7.913228244080233
2019	7.819719271101455