Home
>
Petroleum
>
Navigator
Energy Glossary
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
U.S. Isobutane-Isobutylene Product Supplied (Thousand Barrels)
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1981
215
-11
148
45
112
121
90
128
21
2
2
294
1982
8
2
0
-5
1
-14
-70
-26
-14
112
-30
20
1983
18
3
6
20
8
29
22
23
43
3
59
55
1984
1,225
-266
415
419
-81
-739
17
67
-197
-62
1,081
851
1985
1,379
1,377
879
1,045
598
309
524
-580
262
343
1,363
1,347
1986
1,800
1,349
1,667
-34
1,030
866
1,901
555
1,019
1,283
1,377
2,017
1987
1,540
2,420
1,342
1,172
61
2,693
1,478
1,119
860
1,792
1,976
1,869
1988
2,925
1,972
1,689
1,223
1,362
585
952
872
1,179
1,819
1,670
2,073
1989
1,305
998
765
1,037
965
676
438
778
42
1,369
503
287
1990
982
530
869
598
-101
533
1,194
627
207
644
-103
943
1991
1,476
927
990
886
1,004
356
1,490
385
1,181
1,248
1,487
1,422
1992
-912
3,433
729
992
813
1,306
821
514
613
1,624
1,880
1,378
1993
1,169
1,225
1,284
1,580
838
1,724
940
1,852
1,161
2,001
2,098
1,831
1994
1,792
1,525
2,294
2,146
1,497
1,713
3,229
2,489
1,877
2,316
2,743
2,360
1995
2,343
2,086
1,211
2,415
2,185
2,348
1,710
1,858
2,527
1,731
2,661
1,590
1996
2,162
1,878
2,432
1,914
3,029
2,829
2,297
2,456
3,244
2,461
2,809
1,657
1997
2,482
3,129
2,994
2,537
2,146
2,493
2,373
2,830
2,934
3,563
2,908
3,396
1998
2,759
2,837
2,086
3,352
2,450
3,052
3,363
2,109
2,908
3,298
2,513
2,836
1999
2,806
2,964
2,326
2,260
2,757
3,113
3,525
2,547
2,984
2,896
3,087
3,333
2000
3,439
3,341
2,953
2,944
3,090
3,181
3,138
3,016
2,691
3,613
3,085
2,563
2001
2,352
2,607
2,447
2,927
2,489
3,319
2,749
2,740
2,791
3,326
2,668
2,856
2002
2,013
1,643
2,765
1,863
2,919
2,861
2,470
2,795
2,256
2,182
2,658
2,788
2003
2,330
2,598
2,662
2,747
1,402
1,159
1,991
2,003
2,084
933
3,014
2,952
2004
1,477
1,826
513
1,217
868
585
161
493
220
1,908
745
935
2005
796
303
787
253
718
1,074
1,324
887
1,172
944
1,323
1,547
2006
935
982
291
75
-78
564
1,270
185
999
113
-199
257
2007
656
749
649
-520
-609
347
-50
-6
-448
-108
249
825
2008
241
661
Updated on 4/24/2008
Source: U.S. Energy Information Administration
Contact Us
·
Feedback
·
Privacy/Security
·
Jobs
·
About Us