\f4.0 3.5 3.0 Gasoline price (dollars per gallon) 2.5 2.0 1.5 1.0 Gulf War High demand, Middle East unrest, dollar loses value 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 W 2001 2002 2003 September 11 2004 attacks, world 2005 Year economy slumps 2006 spill Gulf oil 2007 example 4 2008 2009 Slow economic supples 2010 growth, growing 2011 2012 2013 2014 2015 2016