Year	Percent
1999-01-01	49.44990000000000000
2000-01-01	37.93650000000000000
2001-01-01	56.47710000000000000
2002-01-01	61.87070000000000000
2003-01-01	43.82080000000000000
2004-01-01	41.50580000000000000
2005-01-01	41.42070000000000000
2006-01-01	40.20830000000000000
2007-01-01	29.91440000000000000
2008-01-01	25.97030000000000000
2009-01-01	2.10420000000000000
2010-01-01	0.37472900000000000
2011-01-01	0.53821800000000000
2012-01-01	0.45946099999999995
2013-01-01	0.31929300000000000
2014-01-01	0.36922699999999997
2015-01-01	0.46732500000000000
2016-01-01	0.40135600000000000