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View History:
Monthly
Annual
Download Data (XLS File)
West Coast (PADD 5) Isobutane-Isobutylene Field Production (Thousand Barrels)
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1981
16
15
17
14
17
18
20
24
21
23
18
18
1982
21
21
24
23
23
23
23
21
21
20
19
18
1983
10
9
12
11
12
11
8
7
11
10
11
9
1984
61
59
60
58
66
64
59
70
71
69
67
66
1985
62
59
75
77
93
87
80
83
88
92
86
84
1986
85
76
87
85
89
85
82
86
84
92
90
104
1987
90
122
231
148
235
247
262
265
269
250
285
294
1988
280
246
284
257
255
250
240
244
243
233
235
230
1989
228
200
216
186
223
213
203
210
175
204
117
131
1990
164
188
208
146
209
162
177
174
168
249
217
198
1991
331
382
359
335
427
347
374
380
348
380
387
368
1992
334
366
410
398
428
405
394
428
436
460
403
415
1993
426
408
473
495
463
431
385
444
421
456
419
446
1994
412
406
447
364
441
436
401
422
420
386
382
405
1995
399
380
415
404
444
404
408
419
408
492
473
459
1996
436
423
487
396
292
404
395
516
588
650
636
517
1997
586
610
635
627
694
666
622
581
645
580
500
460
1998
313
547
559
596
521
605
574
480
563
598
477
354
1999
388
316
549
540
622
554
512
378
443
483
362
323
2000
332
350
333
413
462
523
458
385
448
376
362
355
2001
398
406
462
415
488
317
427
443
464
488
353
320
2002
331
429
385
498
459
403
440
412
375
427
356
302
2003
382
351
386
433
450
419
405
438
470
443
420
380
2004
358
317
470
620
647
529
429
579
520
535
474
428
2005
439
456
526
590
623
543
498
517
500
498
413
446
2006
456
389
420
562
587
496
409
467
495
491
535
470
2007
445
476
433
549
585
549
537
539
505
545
515
488
2008
506
388
524
428
615
516
536
510
509
608
-
= No Data Reported;
--
= Not Applicable;
NA
= Not Available;
W
= Withheld to avoid disclosure of individual company data.
Release Date: 12/29/2008
Next Release Date: Last Week of January 2009
Referring Pages:
Isobutane/Isobutylene Supply and Disposition
Natural Gas Plant Field Production: Isobutane
PADD 5 Natural Gas Plant Field Production