Year constant 2015 US$ 1970 7036992309.7062435 1971 7384231011.520697 1972 7729048756.207806 1973 8128678656.717571 1974 8479331329.696477 1975 8885323177.121086 1976 9156891990.282024 1977 9380277987.14179 1978 9630551919.392962 1979 9940360094.32929 1980 10226400284.12265 1981 10395929415.758587 1982 10463955870.108585 1983 10550952775.862492 1984 10722227171.275383 1985 11014570503.800383 1986 11456307528.022257 1987 12123060423.540226 1988 12795723694.226553 1989 13518421558.228506 1990 14123364600.122646 1991 15004915862.726942 1992 14864298417.994911 1993 15295084549.986319 1994 15784657112.9746 1995 16200827631.657804 1996 16610976823.883587 1997 17159997087.551554 1998 17961254011.774208 1999 18916044220.288662 2000 19807973866.471863 2001 20649679192.635143 2002 21609770653.741005 2003 22131094147.1203 2004 22519267217.521473 2005 22635294528.05858 2006 23292768567.27225 2007 23710448023.486702 2008 24332791556.044514 2009 25063096240.42459 2010 25930998275.448418 2011 26453432391.23123 2012 27215125195.287094 2013 27711940658.425377 2014 28375941961.974594 2015 29136275612.739437 2016 29898811646.592167 2017 30892081981.179276 2018 31988953081.928493 2019 32826012877.618725 2020 31797184873.912865 2021 34652661644.12497 2022 35489728096.89255 2023 36725954016.70426