Year current US$ 1970 -30000.003054737914 1971 229999.9967217443 1972 129999.99709427354 1973 520000.00886619074 1974 990000.011399389 1975 839999.9886751163 1976 1150000.0208616261 1977 28359999.826177943 1978 3030000.0756978947 1979 3159999.9554455257 1980 1839999.9625980845 1981 10020000.237971552 1982 2840000.022202732 1983 3319999.9798089224 1984 3269999.919459221 1985 3340000.0408291826 1986 4049999.9895691825 1987 5289999.9525398 1988 5330000.115558502 1989 18730000.073090192 1990 14670000.076293956 1991 22729999.886825677 1992 17910000.01691282 1993 13900000.059977178 1994 19449999.712407585 1995 22619999.73468482 1996 44540000.35300855 1997 22590000.202879302 1998 27340000.053867694 1999 21060000.04708766 2000 29600000.103935607 2001 158100003.9018687 2002 41950000.295415536 2003 31290000.226348635 2004 88409999.81015922 2005 32080000.23663044 2006 461260000.8957087 2007 340079998.64406896 2008 58750000.76368451 2009 61859998.46085915 2010 32629999.740049243 2011 48959999.84629452 2012 118189998.48142265 2013 26150000.43809413 2014 14549999.916926032 2015 9159999.858587977 2016 13589999.981224533 2017 13549999.890849 2018 13490000.28520823 2019 16650000.102818012