Year Percent 1995-01-01 23.64690000000000 1996-01-01 98.87320000000000 1997-01-01 56.18290000000000 1998-01-01 162.09700000000000 1999-01-01 111.76000000000000 2000-01-01 163.54600000000000 2001-01-01 122.58200000000001 2002-01-01 30.89190000000000 2003-01-01 34.92450000000000 2004-01-01 30.20420000000000 2005-01-01 20.91420000000000 2006-01-01 32.19950000000000 2007-01-01 15.56490000000000 2008-01-01 4.29676000000000 2009-01-01 6.79053000000000 2010-01-01 21.03680000000000 2011-01-01 12.74100000000000 2012-01-01 13.46960000000000 2013-01-01 40.38670000000000 2014-01-01 21.32240000000000 2015-01-01 20.47260000000000 2016-01-01 22.60820000000000