Year current US$ 2005 36786336387.0503 2006 38290377118.3653 2007 37164469132.0419 2008 26265665243.8538 2009 14996601924.8787 2010 17375596796.1536 2011 15624971764.1899 2012 14399363944.3114 2013 24595382018.2979 2014 33779922786.7441 2015 33417993845.2734 2016 36675558774.0317 2017 40919159280.9228 2018 44735454168.2522 2019 50708024634.6928 2020 45386337246.2256 2021 76960863662.1156