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Note: These data are available in spreadsheet format by clicking the ''Download Series History'' link on the previous page (with drop-down menu bar at top).
View History:
Monthly
Annual
Rocky Mountain (PADD 4) Normal Butane-Butylene Product Supplied (Thousand Barrels per Day)
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1986
9
11
12
14
14
13
11
11
9
9
10
6
1987
4
9
8
10
8
13
13
9
12
11
4
6
1988
7
7
7
13
18
15
14
14
12
12
6
3
1989
0
-1
1
3
5
4
1
2
0
-1
-2
-3
1990
-4
3
3
3
3
1
0
3
0
-3
-2
-3
1991
-3
-3
4
7
6
6
1
6
7
4
-2
-1
1992
-4
0
1
5
3
2
1
0
-2
-5
-6
-5
1993
-4
-3
-1
0
-2
-1
2
0
1
-2
-4
-5
1994
-6
-3
-2
3
2
1
3
1
-2
-3
-4
-6
1995
-4
-2
-2
2
1
3
3
1
0
0
-4
-2
1996
-3
0
2
2
1
2
1
4
-3
-2
-1
-4
1997
-5
-3
-4
1
-1
-3
0
-1
-2
-3
-3
-6
1998
-5
-3
-1
4
4
3
0
0
2
0
-7
-5
1999
-4
-3
-1
3
3
3
4
6
1
2
-2
-5
2000
7
3
3
7
6
6
8
6
7
-1
0
2
2001
-3
0
6
8
6
6
7
9
9
0
-2
-3
2002
-2
0
6
5
6
7
8
6
6
3
-1
-1
2003
-2
3
4
7
4
5
3
5
5
0
-2
-3
2004
-2
-2
1
5
6
6
7
5
4
-2
0
-3
2005
-5
0
4
8
6
7
4
6
4
-1
-3
-5
2006
-4
1
2
5
6
7
7
4
5
1
-1
-7
2007
-4
-2
5
8
8
9
9
10
8
6
-1
-5
2008
-4
-2
8
12
Updated on 6/26/2008
Source: U.S. Energy Information Administration
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