Year current US$ 1990 999999.985098838 1991 280000.001192093 1992 59999.9986588955 1993 110000.00126659857 1994 439999.9976158137 1995 1749999.9944120646 1996 7699999.840930105 1997 3429999.9438226237 1998 410000.0131875271 1999 1789999.9953806398 2000 4260000.037029385 2001 3469999.9801814584 2002 4909999.955445525 2003 3939999.9044835498 2004 4229999.992996453 2005 4550000.036135318 2006 6280000.03285706 2007 6850000.055506824 2008 7259999.981150036 2009 3939999.95850027 2010 1280000.0049173825 2011 1329999.9907612798 2012 640000.0080466261 2013 1820000.043138859 2014 879999.984055757 2015 1410000.0169128175 2016 7040000.1853704415 2017 15090000.359341476 2018 7839999.841526152 2019 6759999.951347704 2020 6590000.18984079 2021 4750000.072643162 2022 64789998.665452