Annual percentage changes in Producer Price Indexes for selected finished energy goods, 2004-08 2004 2005 2006 2007 2008 Finished energy goods 13.4 23.9 -2.0 17.8 -20.3 Gasoline 27.4 41.5 1.8 36.1 -51.4 Heating oil 42.0 41.8 5.2 30.9 -40.6 Liquefied petroleum gas 28.5 44.3 -15.1 59.1 -64.1 Residential natural gas 15.9 28.3 -11.6 -0.9 6.6 Residential electric power 2.3 6.8 2.3 4.5 6.3