Year current US$ 2006 500000 2007 1039999.96185303 2008 730000.019073486 2009 910000.026226044 2010 870000.004768372 2011 469999.998807907 2012 259999.990463257 2013 50000.0007450581 2014 239999.994635582 2015 473277.866840363 2016 174224.704504013 2017 218047.57416248298 2018 257002.23445892302 2019 340872.85399437003 2020 348227.500915527 2021 108594.454824924 2022 615703.165531158