of energy use in iea countries oil crises & climate challenges and 30 years fridtjof unander international agency oecd breakfast series 3 march 2004 washington dc z significant savings achieved through the late 1980s since 1990 rates have slowed all sectors only a few still show strong decoupling co 2 emissions from gdp growth after price shocks 1970s did more to reduce increase efficiency than by policies implemented 1990s as consequence are now growing rapidly along with electricity demand key findings review trends was founded ago methodology applied allows for assessing how factors such economic activity structure prices fuel mix each shaped developments new detailed database information on manufacturing household service transport has