Year	Percent
1998-01-01	240.620999999999980
1999-01-01	245.958000000000000
2000-01-01	243.840000000000000
2001-01-01	238.095000000000000
2002-01-01	134.984000000000000
2003-01-01	165.480000000000000
2004-01-01	153.720000000000000
2005-01-01	103.666000000000000
2006-01-01	73.939300000000000
2007-01-01	44.012200000000000
2008-01-01	14.040999999999999
2009-01-01	20.632400000000000
2010-01-01	25.897200000000000
2011-01-01	36.443900000000000
2012-01-01	46.197200000000000
2013-01-01	35.396000000000000
2014-01-01	15.249100000000000
2015-01-01	25.622300000000000
2016-01-01	43.093400000000000