Year constant 2010 US$ 2005 -684.82620031817 2006 4151.48520901199 2007 5301.99597944211 2008 5695.31477857178 2009 5095.80049408834 2010 2673.79031452025 2011 4042.71490643107 2012 4213.02851005077 2013 5076.52379458472 2014 4934.04200406752 2015 5493.64020713006 2016 4875.12843523828 2017 4580.85428706317