public review draft trends in greenhouse gas emissions 2 1 recent us 2005 total were 7 262 3 teragrams of carbon dioxide equivalents tg co eq overall have risen by 16 percent from 1990 to while the gross domestic product 4 has increased 55 over same period bea 2006 rose 2004 increasing 5 0 8 58 following factors primary contributors this increase strong 6 economic growth leading demand for electricity and an due warmer summer conditions these moderated decreasing fuels winter higher fuel prices figure through illustrate 9 annual changes absolute since 10 11 12 13 change
