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View History:
Monthly
Annual
Download Data (XLS File)
Rocky Mountain (PADD 4) Isobutane-Isobutylene Stock Change(Thousand Barrels per Day)
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1981
1
1
0
0
0
0
1
0
0
0
0
1
1982
0
-1
0
0
0
0
0
0
0
0
0
0
1983
-1
1
0
0
0
0
0
0
0
0
-1
1
1984
0
-1
0
0
0
0
1
0
0
0
-1
0
1985
0
1
-1
0
0
0
0
0
-1
0
0
0
1986
0
1
0
1
-1
0
2
-1
1
0
0
-1
1987
0
1
0
-1
-1
1
0
0
0
0
0
0
1988
1
0
0
-1
0
0
0
0
2
0
-1
-1
1989
1
0
0
-1
0
-1
1
0
0
2
-1
0
1990
0
0
1
-1
0
0
0
0
0
0
0
-1
1991
0
0
0
1
0
0
0
0
1
-1
0
1
1992
1
0
0
0
1
-3
1
-1
2
1
0
-1
1993
-1
0
1
1
0
0
-2
0
0
0
1
0
1994
-2
1
2
0
-1
0
0
-1
1
1
-2
-1
1995
0
0
1
-1
0
0
0
0
1
-1
0
2
1996
-1
0
1
2
-1
-1
0
-1
1
0
-1
0
1997
0
-1
1
0
0
0
-1
1
1
0
-1
-1
1998
1
1
0
-1
-1
1
1
0
0
0
0
0
1999
0
0
-1
0
-1
0
1
-1
-1
0
4
2000
-1
1
0
-1
1
0
-1
0
0
0
-1
0
2001
1
0
0
-1
0
1
0
-2
0
-1
0
0
2002
0
1
2
-1
0
-1
1
0
0
0
0
0
2003
2
1
0
-2
-1
0
0
0
0
-1
0
0
2004
0
0
1
-2
0
1
0
0
1
-1
0
0
2005
0
0
1
-1
1
0
-1
1
0
-1
0
0
2006
0
0
-1
1
0
0
-1
0
0
0
0
-2
2007
0
0
1
-1
0
0
1
0
1
-1
0
0
2008
0
0
0
0
0
0
0
0
0
0
-1
0
2009
1
0
-1
0
0
-1
0
0
-
= No Data Reported;
--
= Not Applicable;
NA
= Not Available;
W
= Withheld to avoid disclosure of individual company data.
Release Date: 10/29/2009
Next Release Date: Last Week of November 2009
Referring Pages:
Isobutane/Isobutylene Supply and Disposition
Rocky Mountain (PADD 4) Supply and Disposition