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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
Midwest (PADD 2) Normal Butane-Butylene Imports (Thousand Barrels per Day)
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1981
72
28
22
23
13
19
17
25
22
27
32
30
1982
38
28
21
28
28
40
25
30
31
29
31
39
1983
41
25
26
19
18
18
21
22
21
33
34
28
1984
21
18
15
10
10
12
8
10
14
22
31
23
1985
19
18
23
13
13
14
9
12
18
19
23
28
1986
23
18
14
13
14
8
17
13
12
16
31
16
1987
27
21
16
17
14
16
16
10
17
19
30
25
1988
22
26
22
19
12
14
16
17
14
21
32
25
1989
34
42
14
4
9
8
9
7
12
15
34
31
1990
28
25
8
7
13
17
14
14
7
22
19
21
1991
13
10
7
9
2
7
10
12
14
25
34
33
1992
25
19
11
5
9
17
13
18
10
29
26
20
1993
19
17
4
4
3
8
4
4
6
12
17
15
1994
11
8
8
3
5
2
5
8
8
11
13
8
1995
7
10
4
2
2
2
2
2
6
11
11
4
1996
13
6
2
3
2
5
7
2
0
2
5
6
1997
11
12
7
6
5
13
13
14
8
9
14
8
1998
16
6
5
3
6
3
8
4
4
12
6
4
1999
8
3
3
6
4
9
9
15
9
7
9
10
2000
13
7
13
8
11
7
7
18
17
12
10
8
2001
10
6
9
7
7
5
2
6
16
14
9
15
2002
20
9
11
5
7
4
6
10
13
10
7
8
2003
10
7
7
3
9
9
10
7
4
6
6
3
2004
2
1
6
1
0
7
1
0
4
10
9
6
2005
16
17
20
12
15
9
9
9
7
20
12
15
2006
18
14
12
11
9
7
13
10
8
12
10
11
2007
12
4
2
8
11
9
18
9
11
13
17
11
2008
13
10
10
7
Updated on 6/26/2008
Source: U.S. Energy Information Administration
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