Year Percent 2000-01-01 5.7531099999999995 2001-01-01 8.1401899999999990 2002-01-01 9.3225400000000000 2003-01-01 12.1126000000000000 2004-01-01 23.9979000000000000 2005-01-01 26.2360000000000000 2006-01-01 35.4701000000000000 2007-01-01 32.5508000000000000 2008-01-01 54.2617000000000000 2009-01-01 64.8668000000000000 2010-01-01 44.7311000000000000 2011-01-01 38.5147000000000000 2012-01-01 32.9583000000000000 2013-01-01 40.6144000000000000 2014-01-01 42.3443000000000000 2015-01-01 47.9064000000000000 2016-01-01 69.9406000000000000