Year Percent 2000-01-01 2.310414831991600 2001-01-01 4.055477441664150 2002-01-01 1.963567541991940 2003-01-01 3.016241299304040 2004-01-01 4.964075767472220 2005-01-01 3.951462352209100 2006-01-01 4.429811433702470 2007-01-01 4.380347830190860 2008-01-01 11.006447175638100 2009-01-01 5.102173001408180 2010-01-01 2.125741716254510 2011-01-01 5.208321442120250 2012-01-01 2.728676299706490 2013-01-01 1.599975036592180 2014-01-01 1.451424523673670 2015-01-01 0.649546401717174 2016-01-01 1.072236002966700