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



Energy Glossary

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Monthly

Annual

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

Decade	Year-0	Year-1	Year-2	Year-3	Year-4	Year-5	Year-6	Year-7	Year-8	Year-9
1980's										8
1990's	8	10	11	10	10	10	10	10	10	11
2000's	12	11	11	10	11	10	9	9

Updated on 6/26/2008

Source: U.S. Energy Information Administration