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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
U.S. Normal Butane-Butylene Refinery and Blender Net Inputs (Thousand Barrels per Day)
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1981
237
165
117
104
77
89
80
91
144
185
242
301
1982
243
213
144
123
120
133
144
142
170
200
248
250
1983
160
130
89
105
112
146
109
98
117
179
225
223
1984
218
198
164
135
120
115
103
115
153
197
250
236
1985
206
195
175
132
103
97
97
124
168
196
247
256
1986
234
204
132
125
121
90
75
98
142
187
268
303
1987
271
206
151
127
124
104
85
97
121
159
219
258
1988
246
215
147
122
111
97
82
94
126
166
274
294
1989
265
183
126
81
65
62
73
66
124
209
274
254
1990
251
184
68
53
53
54
58
64
132
195
264
275
1991
232
184
105
74
73
78
79
86
133
197
264
280
1992
245
174
84
72
69
72
72
68
142
216
252
285
1993
293
206
95
86
81
70
68
83
142
210
294
269
1994
235
190
99
65
70
76
76
79
128
183
255
243
1995
229
184
103
70
67
58
59
74
144
199
262
287
1996
264
187
110
76
79
72
66
69
124
195
242
238
1997
225
203
119
71
68
70
62
70
128
182
227
240
1998
234
185
113
70
66
65
65
66
108
186
235
213
1999
205
157
105
64
68
57
60
56
106
168
203
226
2000
217
184
121
71
65
67
65
68
104
167
237
200
2001
185
171
102
71
70
66
64
66
105
148
195
220
2002
205
164
100
68
59
58
65
65
96
160
211
226
2003
196
154
88
59
52
58
58
61
90
142
184
197
2004
176
157
106
59
51
45
41
44
73
137
179
194
2005
163
146
91
58
53
55
47
45
122
199
222
229
2006
231
178
111
81
75
75
65
73
121
164
207
237
2007
221
150
96
64
60
65
65
68
126
182
243
249
2008
219
173
112
87
Updated on 6/26/2008
Source: U.S. Energy Information Administration
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