Year	Percent
1996-01-01	3.6363600000000000
1997-01-01	8.8888900000000000
1998-01-01	13.4831000000000000
1999-01-01	12.9032000000000000
2000-01-01	13.6752000000000000
2001-01-01	12.7321000000000000
2002-01-01	15.0485000000000000
2003-01-01	10.7659999999999980
2004-01-01	15.5797000000000000
2005-01-01	16.9014000000000000
2006-01-01	32.2148000000000000
2007-01-01	24.3465000000000000
2008-01-01	23.3995000000000000
2009-01-01	17.0011000000000000
2010-01-01	12.0777000000000000
2011-01-01	6.0345300000000000
2012-01-01	7.3140700000000000
2013-01-01	7.8578700000000000
2014-01-01	8.7262100000000000
2015-01-01	4.7472900000000005
2016-01-01	10.5806000000000000