Rocky Mountain (PADD 4) Isobutane-Isobutylene Field Production (Thousand Barrels)



Energy Glossary

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Monthly

Annual

Rocky Mountain (PADD 4) Isobutane-Isobutylene Field Production (Thousand Barrels)

Decade	Year-0	Year-1	Year-2	Year-3	Year-4	Year-5	Year-6	Year-7	Year-8	Year-9
1980's		59	69	69	1,541	1,842	1,878	2,121	2,786	2,761
1990's	2,759	3,510	3,919	3,687	3,621	3,789	3,606	3,599	3,667	3,966
2000's	4,239	4,035	3,981	3,786	3,903	3,605	3,219	3,269

Updated on 6/26/2008

Source: U.S. Energy Information Administration