Year Percent 1993-01-01 2.6592200000000000 1994-01-01 4.7130199999999990 1995-01-01 5.2175400000000005 1996-01-01 9.1025400000000000 1997-01-01 9.7878700000000000 1998-01-01 10.5997000000000000 1999-01-01 12.3096000000000000 2000-01-01 17.4009000000000000 2001-01-01 24.1331000000000000 2002-01-01 28.1505000000000000 2003-01-01 33.3485000000000000 2004-01-01 32.9382000000000000 2005-01-01 48.2021000000000000 2006-01-01 60.6916000000000000 2007-01-01 86.3793000000000000 2008-01-01 73.3164000000000000 2009-01-01 78.1223000000000000 2010-01-01 75.9514000000000000 2011-01-01 69.8995000000000000 2012-01-01 72.7824000000000000 2013-01-01 59.1288000000000000 2014-01-01 42.3024000000000000 2015-01-01 42.5975000000000000 2016-01-01 38.4858000000000000