Year current USD 1960 275643564.356436 1961 157061350.086544 1962 186153846.153846 1963 185384615.38461497 1964 137481470.39706 1965 132131636.142507 1966 176901786.339497 1967 218100895.69232202 1968 278696524.42661196 1969 347028223.805442 1970 386403740.38820696 1971 460899849.34336203 1972 531950093.4094179 1973 544785374.646643 1974 852963864.000475 1975 1030991735.53719 1976 1708677685.9504101 1977 2237603305.78512 1978 3190082644.6281 1979 3543388429.75207 1980 3980692489.03581 1981 4463839959.5905 1982 4646524886.33317 1983 4714159752.90945 1984 4759446931.422279 1985 4883795774.80977 1986 5325292074.23189 1987 6040845305.00251 1988 7732395675.54562 1989 9468974884.43025 1990 10110714871.0587 1991 10956524347.7561 1992 11614665196.099201 1993 12377424872.7063 1994 13519265762.7271 1995 16085095679.480501 1996 16408665266.9578 1997 14848484529.9378 1998 10457957529.3983 1999 12095186823.9094 2000 13801107024.1211 2001 12941850827.6594 2002 14101703314.7096 2003 15847047272.178001 2004 17829864142.7723 2005 22159512557.1222 2006 25177237741.0344 2007 27726129585.2493 2008 26072410507.6902 2009 24575661939.1823 2010 28175181218.9679 2011 30991707946.4761 2012 31951760810.319 2013 34311220715.1665 2014 37552298953.8232 2015 36570769322.5744 2016 36885283430.0234 2017 39170682135.621605 2018 43069973342.8752 2019 44102240752.179 2020 46117096574.581894 2021 50873788105.2917 2022 46365420707.4157