Year	Percent
2000-01-01	181.42
2001-01-01	168.36
2002-01-01	205.67
2003-01-01	331.06
2004-01-01	325.97
2005-01-01	367.68
2006-01-01	470.33
2007-01-01	509.06
2008-01-01	286.53
2009-01-01	433.02
2010-01-01	519.62
2011-01-01	407.97
2012-01-01	471.24
2013-01-01	467.79
2014-01-01	453.61
2015-01-01	408.43
2016-01-01	400.14