Year Purchasing power parity; international dollars (Billions) 2000 2.590 2001 2.722 2002 2.887 2003 2.091 2004 2.232 2005 2.437 2006 2.725 2007 3.166 2008 3.424 2009 3.624 2010 3.901 2011 4.288 2012 4.773 2013 5.647 2014 5.922 2015 5.624 2016 6.283 2017 7.203 2018 7.460 2019 7.394 2020 7.270 2021 7.984 2022 8.957 2023 9.709 2024 10.468 2025 11.318 2026 12.251 2027 13.266 2028 14.481 2029 15.665