Rocky Mountain (PADD 4) Isobutane-Isobutylene Refinery and Blender Net Inputs (Thousand Barrels per Day)



Energy Glossary

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Monthly

Annual

Rocky Mountain (PADD 4) Isobutane-Isobutylene Refinery and Blender Net Inputs (Thousand Barrels per Day)

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1981	2	3	3	3	2	2	2	2	3	2	3	2
1982	2	3	2	2	1	1	2	2	2	2	2	2
1983	2	1	2	2	2	2	2	1	2	1	2	1
1984	1	2	2	1	3	3	2	3	2	2	2	2

1985	2	2	2	2	3	2	2	2	3	2	2	2
1986	2	1	2	3	4	3	3	8	3	3	2	3
1987	3	2	2	2	1	3	2	3	3	2	3	3
1988	3	4	3	3	3	4	4	4	3	3	3	3
1989	3	2	2	2	2	4	4	3	4	3	4	2

1990	2	3	3	3	3	4	4	3	4	3	3	4
1991	3	4	4	3	4	4	5	4	4	4	3	3
1992	2	3	3	4	3	3	4	4	3	4	3	3
1993	4	3	4	2	2	4	4	4	3	5	4	4
1994	4	5	4	4	4	4	4	3	4	4	3	4

1995	3	3	3	3	4	4	4	4	5	3	4	4
1996	4	3	5	4	3	4	5	5	5	4	3	3
1997	3	4	3	5	4	5	4	5	5	4	4	4
1998	2	3	4	2	3	3	3	3	3	3	3	4
1999	4	4	4	5	5	6	5	6	5	5	4	4

2000	4	4	4	4	5	5	6	6	6	7	5	4
2001	4	4	3	4	4	4	5	5	5	5	6	4
2002	4	4	4	5	6	5	5	5	5	4	3	3
2003	3	2	4	4	4	6	5	5	6	5	4	3
2004	2	3	4	4	5	5	6	5	6	5	3	4

2005	3	3	4	5	5	5	6	5	6	4	3	2
2006	4	4	7	6	7	7	7	7	6	6	7	6
2007	5	6	6	6	7	7	8	7	8	7	6	5
2008	6	6	7	6

Updated on 6/26/2008

Source: U.S. Energy Information Administration