Year current US$ 1960 2933.3544999115634 1961 2985.3730835135166 1962 3148.509664945269 1963 3276.2695510414965 1964 3473.18838837657 1965 3722.209583550118 1966 4035.9244130209763 1967 4223.236403104472 1968 4570.70032011377 1969 4902.632222787065 1970 5130.399802289922 1971 5506.272176924541 1972 5999.126802369636 1973 6642.693281972667 1974 7209.100090746789 1975 7775.533697531019 1976 8615.910720668298 1977 9403.38782910036 1978 10427.516389189797 1979 11518.741173032573 1980 12441.441145496881 1981 13820.136063366195 1982 14247.289074547884 1983 15341.71700598175 1984 16808.83673088348 1985 17838.491195774346 1986 18625.55501204482 1987 19679.221120450326 1988 21180.21859936099 1989 22652.521587891533 1990 23653.35132188776 1991 24094.041799375907 1992 24974.72408527623 1993 25772.064044689756 1994 26931.639314495333 1995 27897.913847517648 1996 29112.214382855695 1997 30518.031499031924 1998 31691.913848916894 1999 33320.91425266743 2000 35151.34239515033 2001 35831.382254506665 2002 36651.914670615755 2003 38395.433265027415 2004 40788.33422658941 2005 43368.38080645344 2006 45741.01803311526 2007 47727.50516811304 2008 48398.08924840615 2009 46581.128985109004 2010 48552.81826935501 2011 50289.051161711024 2012 51881.28755079015 2013 53341.1996899454 2014 54877.35455532154 2015 55701.81244346794 2016 56617.873807451586 2017 58796.468900128704 2018 61512.70649804199 2019 63584.037741940076 2020 62186.98990646281 2021 69147.04917078726 2022 74980.83320514017 2023 78675.48092687568