Year	Percent
1996-01-01	12.5651
1997-01-01	10.8918
1998-01-01	12.8437
1999-01-01	14.8403
2000-01-01	16.9670
2001-01-01	15.0810
2002-01-01	19.0806
2003-01-01	18.9424
2004-01-01	11.8949
2005-01-01	11.5642
2006-01-01	31.5115
2007-01-01	32.2249
2008-01-01	28.6357
2009-01-01	23.8993
2010-01-01	20.2599
2011-01-01	31.5377
2012-01-01	51.8914
2013-01-01	48.7486
2014-01-01	47.9931
2015-01-01	48.7545
2016-01-01	52.1215