Year Percent 1994-01-01 397.07412967454200 1995-01-01 125.91523468761300 1996-01-01 39.18254236541110 1997-01-01 17.40804106073570 1998-01-01 10.57716114825140 1999-01-01 22.68367180613450 2000-01-01 18.70073428380230 2001-01-01 9.05940031459490 2002-01-01 5.82353408913733 2003-01-01 5.17967781908312 2004-01-01 6.96126135875792 2005-01-01 8.17916036802001 2006-01-01 7.26159462769947 2007-01-01 8.42150039394857 2008-01-01 12.34871959940210 2009-01-01 3.46672373207794 2010-01-01 6.41956509060860 2011-01-01 7.68725103356185 2012-01-01 3.31605566687646 2013-01-01 3.98471235548128 2014-01-01 2.98130868933673 2015-01-01 4.00357820695098 2016-01-01 1.27512528113286 2017-01-01 3.15318617485030