Year current US$ 1998 35420000 1999 52700000 2000 185910000 2001 48860000 2002 54850000 2003 51110000 2004 100660000 2005 139480000 2006 270520000 2007 94590000 2008 68090000 2009 36470000 2010 48560000 2011 48770000 2012 44090000 2013 67360000 2014 61460000 2015 88800000 2016 73870539.1040243 2017 105439585.190297 2018 98700000 2019 100450000 2020 71670000 2021 36580000 2022 34370000