Year	Percent
1998-01-01	28.600000000000000
1999-01-01	77.700000000000000
2000-01-01	36.100000000000000
2001-01-01	36.100000000000000
2002-01-01	130.000000000000000
2003-01-01	112.400000000000000
2004-01-01	137.400000000000000
2005-01-01	38.100000000000000
2006-01-01	49.100000000000000
2007-01-01	59.800000000000000
2008-01-01	58.800000000000000
2009-01-01	62.300000000000000
2010-01-01	57.144200000000000
2011-01-01	60.665400000000000
2012-01-01	51.986000000000004
2013-01-01	50.909000000000000
2014-01-01	50.834600000000000
2015-01-01	51.489600000000000
2016-01-01	57.826200000000000