Year	Percent
1996-01-01	8.554420000000000
1997-01-01	15.241000000000000
1998-01-01	9.473880000000000
1999-01-01	5.682910000000000
2000-01-01	21.894900000000000
2001-01-01	15.180700000000000
2002-01-01	15.319300000000000
2003-01-01	16.740800000000000
2004-01-01	17.137999999999998
2005-01-01	19.178700000000000
2006-01-01	18.175700000000000
2007-01-01	14.034100000000000
2008-01-01	14.225000000000000
2009-01-01	6.887090000000000
2010-01-01	8.364640000000000
2011-01-01	9.234580000000001
2012-01-01	10.543400000000000
2013-01-01	8.191210000000000
2014-01-01	8.190750000000000
2015-01-01	6.866460000000001
2016-01-01	10.006500000000000