Year Purchasing power parity; international dollars (Billions) 1990 5.485 1991 5.974 1992 6.677 1993 6.724 1994 7.074 1995 7.519 1996 7.902 1997 8.377 1998 8.750 1999 9.172 2000 9.708 2001 10.164 2002 11.012 2003 11.620 2004 12.724 2005 13.736 2006 14.718 2007 15.668 2008 16.393 2009 16.543 2010 17.755 2011 19.044 2012 20.502 2013 21.744 2014 23.796 2015 24.615 2016 24.588 2017 24.438 2018 25.263 2019 25.471 2020 23.717 2021 25.679 2022 28.740 2023 30.727 2024 32.302 2025 33.741 2026 35.263 2027 36.862 2028 38.555 2029 40.327