Year current US$ 1979 1200000.04768372 1980 7699999.80926514 1981 13960000.038146999 1982 14029999.7329712 1983 19600000.3814697 1984 7510000.228881841 1985 5530000.20980835 1986 8449999.80926514 1987 4920000.07629395 1988 7289999.96185303 1989 10430000.3051758 1990 6360000.1335144 1991 4829999.92370605 1992 5780000.20980835 1993 6070000.17166138 1994 5159999.84741211 1995 3849999.90463257 1996 4989999.771118159 1997 2990000.00953674 1998 3940000.05722046 1999 2660000.08583069 2000 6449999.80926514 2001 1840000.0333786 2002 2400000.09536743 2003 3950000.04768372 2004 11630000.1144409 2005 18170000.0762939 2006 14710000.038146999 2007 13800000.1907349 2008 11199999.8092651 2009 10359999.6566772 2010 10079999.923706101 2011 8479999.54223633 2012 12680000.3051758 2013 8149999.61853027 2014 4510000.228881841 2015 3710000.03814697 2016 3680000.0667572 2017 4190000.05722046 2018 4820000.17166138 2019 6809999.94277954 2020 12659999.8474121 2021 44250000 2022 31440000.5340576