Energy efficiency

Energy use (kg oil equivalent) per $1,000 GDP (Constant 2005 PPP $)

Year	Value	Footnotes
1990	65
1991	63
1992	71
1993	65
1994	63
1995	61
1996	58
1997	54
1998	75
1999	86
2000	67
2001	71
2002	65
2003	65
2004	56
2005	52
2006	51
2007	52
2008	50

Source: United Nations Statistics Division