Year current US$ 1960 19999.99955296516 1964 19999.99955296516 1967 9999.99977648258 1968 29999.999329447703 1970 109999.99940395355 1971 549999.987706542 1972 1540000.019595027 1973 3069999.9611824774 1974 11589999.821037017 1975 14260000.044479962 1976 26010000.003501747 1977 32599999.522790283 1978 26540000.22634863 1979 23910000.10445715 1980 11059999.79749322 1981 2630000.069737438 1982 1509999.9886006112 1983 1909999.981522563 1984 6439999.805763364 1985 2469999.9783188067 1986 3719999.9727308713 1987 10019999.969750635 1988 3810000.0247359285 1989 42849999.055266336 1990 33740001.04703011 1991 19220000.25957823 1992 12019999.904558055 1993 27440000.103786625 1994 36430000.41879712 1995 49610000.21919604 1996 48859999.600797884 1997 52270001.15811822 1998 72049999.95790419 1999 49409999.82133509 2000 37699999.45722525 2001 45719999.8423457 2002 55309999.417513594 2003 62649999.82900908 2004 74560000.37677589 2005 70119999.8166412 2006 59779999.39769499 2007 59200000.32894323 2008 95100001.92001468 2009 103940002.1210312 2010 112930000.11891127 2011 65070000.61497094 2012 60280000.213533595 2013 73620000.91560179 2014 75660000.1882762 2015 181649997.68696725 2016 2290209882.8516903 2017 323290000.92670304 2018 280689996.16801727 2019 114970000.18320976 2020 134080001.91673623 2021 115029999.11457303 2022 89420000.2588332