Year Purchasing power parity; international dollars (Billions) 1994 4.968 1995 5.433 1996 5.599 1997 6.531 1998 7.551 1999 8.292 2000 7.755 2001 7.191 2002 6.391 2003 7.430 2004 9.303 2005 10.678 2006 10.898 2007 11.617 2008 12.720 2009 13.899 2010 14.880 2011 16.646 2012 19.950 2013 20.886 2014 22.996 2015 25.426 2016 27.536 2017 28.519 2018 29.530 2019 30.435 2020 27.346 2021 30.606 2022 34.098 2023 33.173