Year current US$ 1990 103973146.038682 1991 110388719.262823 1992 72719484.2180414 1993 60220409.402234 1994 73884709.9807832 1995 82518324.5296383 1996 77382098.1154836 1997 84263240.7293818 1998 88325488.9127575 1999 97697517.4114359 2000 158363108.457978 2001 148462877.292582 2002 140421261.445146 2003 109044774.756558 2004 137043459.633805 2005 161137183.597589 2006 167375425.688565 2007 205432452.326434 2008 222284879.446096 2009 236026334.366034 2010 157255181.223234 2011 269894925.936247 2012 281672476.617481 2013 294761664.371735 2014 294454669.476144 2015 283935592.382954 2016 264855637.893428 2017 276728432.914606 2018 297161047.767804 2019 270453754.625394 2020 270306984.238492 2021 387791669.677923