Year MJ/$2011 PPP GDP 1990 4.34397864482609 1991 4.51785168148391 1992 4.67289528374144 1993 4.53510235898574 1994 4.73742197236478 1995 4.54943780518995 1996 4.43244585452709 1997 4.47092342816566 1998 4.42248767506499 1999 4.46594530029748 2000 4.43643893211677 2001 4.29873465228162 2002 4.24710329200477 2003 4.15992249280552 2004 3.99807863176685 2005 3.95699515531952 2006 4.06062173596923 2007 4.05010232285674 2008 4.14947661222628 2009 4.45368720144536 2010 4.53063995269954 2011 4.04253666546484 2012 4.05746470667085 2013 4.31066078593391 2014 4.25901011392608 2015 5.21262193410861