Year	Percent
1998-01-01	21.1462000000000000
1999-01-01	34.6725000000000000
2000-01-01	44.7000000000000000
2001-01-01	50.2000000000000000
2002-01-01	30.5166000000000000
2003-01-01	37.7484000000000000
2004-01-01	58.3201000000000000
2005-01-01	69.3986000000000000
2006-01-01	53.8442000000000000
2007-01-01	50.1469000000000000
2008-01-01	48.9448000000000000
2009-01-01	7.0741900000000000
2010-01-01	9.5731700000000000
2011-01-01	5.7723000000000000
2012-01-01	7.0617399999999995
2013-01-01	7.1373700000000000
2014-01-01	11.0755000000000000