Year current US$ 1979 0 1980 13109999.7311831 1981 7759999.968111521 1982 8220000.01743436 1983 18930000.0015646 1984 14720000.1962483 1985 28619999.7160584 1986 33730000.0488758 1987 43209999.784827195 1988 5259999.79302287 1989 6360000.2452731095 1990 26470000.2223253 1991 1669999.92728233 1992 -1929999.91960824 1993 4619999.75331128 1994 7179999.86931682 1995 4789999.94695187 1996 6909999.87721443 1997 8959999.7960031 1998 -6899999.90165234 1999 15899999.888613801 2000 17049999.9560416 2001 29130000.5726516 2002 19380000.190809403 2003 9289999.35090542 2004 3329999.96840954 2005 5730000.02466142 2006 14350000.2250075 2007 16010000.0053644 2008 34460000.038147 2009 10640000.1272559 2010 18650000.1773238 2011 23189999.632537402 2012 23660000.3801286 2013 21329999.6424466 2014 14669999.6888638 2015 20654951.6133964 2016 35914762.4708712 2017 30355288.7290716 2018 35800475.1726985 2019 30902095.2731371 2020 595603.425055742 2021 319999.806582928 2022 3223660.1598560764