Year US Dollars adjusted for inflation) 1960 1153497471.75521 1961 1200144078.72412 1962 1273698494.39634 1963 1257547788.94945 1964 1286255331.61624 1965 1334676997.28504 1966 1341852395.43964 1967 1460248258.79039 1968 1505089181.74741 1969 1535583508.30374 1970 1537380442.1502 1971 1559108853.07615 1972 1595147634.58968 1973 1602315070.06168 1974 1735089730.35784 1975 1787114363.9664 1976 1939642697.91623 1977 1946826233.6606 1978 2036532579.66401 1979 2111163790.67383 1980 2127987208.88243 1981 2218539520.81643 1982 2430680631.95068 1983 2439090416.0079 1984 2395706395.59655 1985 2599757453.52648 1986 2806577589.00363 1987 2799944613.51917 1988 2962218006.55865 1989 3025913610.99051 1990 3007669516.04934 1991 3280464673.78828 1992 3288098668.1456 1993 3401912420.09734 1994 3446647815.81348 1995 3643671090.83705 1996 4045012128.92928 1997 4300528860.1238 1998 4614799451.96413 1999 4956487462.32454 2000 5046707523.52324 2001 5380466456.43255 2002 5614678393.87183 2003 6052760301.03174 2004 6323831618.4998 2005 6871593161.43807 2006 7301284780.41565 2007 7714172808.44856 2008 8276883001.25427 2009 8522045465.25424 2010 8979966766.07232 2011 9575057057.97374 2012 10192906645.5417 2013 10783339866.97 2014 11249917444.6573 2015 11688050885.9058 2016 12380518526.0539 2017 13215293997.0124