Year	Percent
1997-01-01	0.52120600000000010
1998-01-01	0.21655100000000002
1999-01-01	0.13358399999999998
2000-01-01	0.38318000000000000
2001-01-01	2.97812000000000000
2002-01-01	1.43523000000000000
2003-01-01	2.47734000000000030
2004-01-01	2.35072000000000000
2005-01-01	2.65134000000000030
2006-01-01	2.76085000000000000
2007-01-01	3.05780000000000000
2008-01-01	3.58905000000000000
2009-01-01	3.60324000000000000
2010-01-01	3.60848000000000000
2011-01-01	2.98247000000000000
2012-01-01	1.78977000000000000
2013-01-01	1.62880000000000000
2014-01-01	1.84969000000000000
2015-01-01	1.88854000000000000
2016-01-01	1.37305000000000000