Year Purchasing power parity; international dollars (Billions) 1980 10.025 1981 11.089 1982 11.445 1983 11.715 1984 12.162 1985 12.641 1986 12.931 1987 13.194 1988 13.736 1989 14.113 1990 14.577 1991 15.260 1992 15.256 1993 14.849 1994 13.407 1995 15.042 1996 15.952 1997 16.666 1998 17.221 1999 17.938 2000 18.504 2001 18.855 2002 19.350 2003 20.419 2004 20.691 2005 21.996 2006 23.075 2007 24.816 2008 25.966 2009 27.665 2010 26.419 2011 28.339 2012 28.318 2013 30.706 2014 31.283 2015 31.002 2016 33.431 2017 34.631 2018 36.015 2019 36.002 2020 35.258 2021 36.212 2022 38.109 2023 38.762 2024 38.506 2025 39.773 2026 41.131 2027 42.536 2028 43.990 2029 45.503