Year Purchasing power parity; international dollars (Billions) 1996 11.395 1997 14.241 1998 16.390 1999 18.409 2000 19.662 2001 20.579 2002 21.955 2003 23.253 2004 25.372 2005 27.276 2006 29.717 2007 32.347 2008 34.815 2009 34.744 2010 35.436 2011 36.495 2012 37.104 2013 38.975 2014 39.732 2015 41.690 2016 44.795 2017 47.025 2018 49.944 2019 52.248 2020 51.342 2021 57.665 2022 64.334 2023 67.879 2024 71.254 2025 74.686 2026 78.377 2027 82.253 2028 86.322 2029 90.610