Year current US$ 1970 119999.997317791 1971 29999.999329447703 1972 39999.9991059303 1973 9999.99977648258 1974 90000.0035762787 1975 90000.0035762787 1976 79999.9982118607 1977 39999.9991059303 1978 400000.00596046395 1979 6400000.09536743 1980 14609999.6566772 1981 15829999.923706101 1982 23879999.1607666 1983 17639999.3896484 1984 21239999.7711182 1985 15649999.6185303 1986 19190000.5340576 1987 19799999.237060502 1988 25659999.8474121 1989 23350000.3814697 1990 29920000.0762939 1991 529999.971389771 1992 26280000.6866455 1993 26719999.3133545 1994 26569999.6948242 1995 48860000.6103516 1996 38069999.6948242 1997 23629999.1607666 1998 26020000.4577637 1999 19379999.1607666 2000 15640000.3433228 2001 18530000.6866455 2002 26010000.2288818 2003 22260000.2288818 2004 40840000.1525879 2005 33889999.3896484 2006 34610000.6103516 2007 36959999.0844727 2008 36959999.0844727 2009 30950000.762939498 2010 26370000.8392334 2011 20610000.6103516 2012 10130000.1144409 2013 5929999.82833862 2014 0 2016 59999.9986588955 2017 140000.000596046 2018 8260000.22888184 2019 9999.99977648258 2020 140000.000596046 2021 70000.0002980232 2022 9999.99977648258