Year Percent 1992-01-01 2.968850000000000000000 1993-01-01 5.981550000000000000000 1994-01-01 5.799819999999999500000 1995-01-01 5.917630000000000000000 1996-01-01 5.464640000000000000000 1997-01-01 2.557800000000000000000 1998-01-01 0.000045000000000000000 1999-01-01 0.000039000000000000000 2000-01-01 0.000028999999999999997 2001-01-01 0.000026000000000000002 2002-01-01 0.022296000000000000000 2003-01-01 0.048101000000000000000 2004-01-01 0.039008999999999995000 2005-01-01 0.029286000000000003000 2006-01-01 0.027063000000000000000 2007-01-01 0.027183000000000000000 2008-01-01 0.029432000000000000000 2009-01-01 0.031463000000000000000 2010-01-01 0.028263000000000000000 2011-01-01 0.027711000000000003000 2012-01-01 0.029245000000000000000 2013-01-01 0.031119000000000000000 2014-01-01 0.029042000000000002000 2015-01-01 0.027623000000000000000 2016-01-01 0.078654000000000000000