Year current US$ 2003 52000000 2004 71900001.5258789 2005 56200000.762939505 2006 43000000 2007 81000000 2008 75000000 2009 132000000 2010 138000000 2011 186000000 2012 203000000 2013 214000000 2014 168000000 2015 135000000 2016 126599998.47412099 2017 168600006.10351598 2018 134000000