Year Purchasing power parity; international dollars (Billions) 1980 7.566 1981 8.661 1982 9.546 1983 8.898 1984 8.689 1985 8.594 1986 8.480 1987 8.293 1988 8.249 1989 8.502 1990 8.953 1991 9.544 1992 10.747 1993 10.928 1994 11.559 1995 12.251 1996 13.366 1997 14.619 1998 15.984 1999 17.511 2000 19.144 2001 20.299 2002 22.088 2003 25.650 2004 28.270 2005 30.876 2006 36.341 2007 38.914 2008 40.967 2009 39.232 2010 41.083 2011 41.850 2012 42.895 2013 42.843 2014 43.509 2015 40.652 2016 38.524 2017 39.155 2018 39.811 2019 40.625 2020 37.425 2021 38.735 2022 42.077 2023 44.528 2024 46.679 2025 48.598 2026 49.941 2027 52.010 2028 54.524 2029 57.114