Year National Currency 2004-01-01 33003.50 2005-01-01 35404.75 2006-01-01 39758.25 2007-01-01 52473.25 2008-01-01 56158.50 2009-01-01 58329.75 2010-01-01 54135.25 2011-01-01 56777.75 2012-01-01 60356.00 2013-01-01 64529.75 2014-01-01 76048.50 2015-01-01 76597.75 2016-01-01 69573.75 2017-01-01 68153.75