Year constant 2015 US$ 1960 1827610960.327384 1961 1873762752.246736 1962 2016173995.8966975 1963 2127288096.7740536 1964 2195223142.8587966 1965 2224584900.1024857 1966 2393846794.675501 1967 2553321436.8594327 1968 2842333243.1918874 1969 3070894372.9675612 1970 3262033655.256304 1971 3429782095.8070135 1972 3618462750.7881885 1973 3781462679.729157 1974 4012783030.7525706 1975 4382004035.043619 1976 4734556794.592511 1977 4997469283.999619 1978 5246136238.653939 1979 5391692655.595 1980 5457784772.46935 1981 5627269503.267062 1982 5399056131.262204 1983 5171152875.7912855 1984 5087630041.74571 1985 5091487903.296776 1986 4902607877.84641 1987 4988642326.38696 1988 5090593034.289207 1989 5279678257.361215 1990 5443550577.204204 1991 5679569483.20303 1992 5916395184.295661 1993 6169169385.158829 1994 6435807512.922884 1995 6671891753.972407 1996 7039298352.871376 1997 7566191019.624224 1998 8034724971.606808 1999 8380990327.940553 2000 8529782707.4325 2001 8671994437.943914 2002 8789645954.2604 2003 8896231370.531448 2004 9100907975.668352 2005 9301564262.148834 2006 9670199850.17905 2007 10108928866.529821 2008 10515335346.426119 2009 11031311198.851486 2010 11600596728.910269 2011 12128471180.487206 2012 12781923585.558996 2013 13591022671.366594 2014 14313948047.937298 2015 15172303241.678726 2016 16017297401.882528 2017 16801383753.551369 2018 17685859820.2197 2019 18307171079.01045 2020 16749647117.797037 2021 17553445758.005753 2022 18513516886.5145 2023 19154759508.732887