Year Percent 1982-01-01 0.23859200000000 1983-01-01 0.40338300000000 1984-01-01 1.59677000000000 1985-01-01 2.92525000000000 1986-01-01 3.79454000000000 1987-01-01 6.30242000000000 1988-01-01 8.33395000000000 1989-01-01 7.19517000000000 1990-01-01 4.57106000000000 1991-01-01 3.42889000000000 1992-01-01 2.48425000000000 1993-01-01 5.35245000000000 1994-01-01 8.23201000000000 1995-01-01 9.81585000000000 1996-01-01 10.47730000000000 1997-01-01 12.80130000000000 1998-01-01 13.73520000000000 1999-01-01 17.63780000000000 2000-01-01 24.39900000000000 2001-01-01 35.17600000000000 2002-01-01 43.53200000000000 2003-01-01 53.73890000000000 2004-01-01 55.96170000000000 2005-01-01 55.60280000000000 2006-01-01 72.49970000000000 2007-01-01 79.85900000000000 2008-01-01 77.44590000000000 2009-01-01 104.76100000000001 2010-01-01 95.46530000000000 2011-01-01 83.89740000000000 2012-01-01 85.26120000000000 2013-01-01 79.28150000000000 2014-01-01 59.65730000000000 2015-01-01 57.35920000000000 2016-01-01 49.28720000000000