Year current US$ 1960 13066634.000081666 1961 13999965.0000875 1962 14524963.68759078 1963 13708299.062585676 1964 14758296.437592238 1965 15108295.562594427 1966 16099959.750100624 1967 15835106.032778101 1968 15350000 1969 16649999.999999998 1970 18450000 1971 20051922.326144516 1972 27585804.8653032 1973 30165081.08588167 1974 32923702.728186585 1975 33237225.98806524 1976 32792844.682944816 1977 49353148.14814814 1978 60844777.777777776 1979 70496359.62962963 1980 81440339.62962963 1981 101386539.25925925 1982 111059203.33333333 1983 119955349.62962963 1984 132024987.77777778 1985 142741705.18518516 1986 152402212.2222222 1987 171321388.14814815 1988 189467453.3333333 1989 207893150.37037036 1990 229322222.2222222 1991 243470370.37037036 1992 269685185.1851852 1993 278092592.5925926 1994 278522222.2222222 1995 304570370.3703703 1996 322492592.5925926 1997 335140740.7407407 1998 359903703.7037037 1999 371259259.2592592 2000 408771962.9629629 2001 445589000 2002 470160999.99999994 2003 485257888.88888884 2004 520315222.2222222 2005 550346703.7037036 2006 617803333.3333333 2007 691590370.3703703 2008 709820777.7777777 2009 701288925.9259259 2010 708168962.9629629 2011 700854000 2012 726213444.4444444 2013 761060481.4814814 2014 738996296.2962962 2015 766874074.074074 2016 806337037.037037 2017 839422222.2222222 2018 882574074.074074 2019 908962962.9629629 2020 861218518.5185184 2021 855333333.3333333 2022 958674074.074074 2023 1058555555.5555555