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Download Data (XLS File) |
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| Refining District Indiana-Illinois-Kentucky Refinery Stocks of Isobutane (Thousand Barrels) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2010 | 266 | 288 | 313 | 192 | 206 | 209 | 235 | 219 | 199 | 250 | 313 | 208 |
| 2011 | 166 | 147 | 160 | 224 | 252 | 181 | 190 | 163 | 169 | 181 | 205 | 235 |
| 2012 | 268 | 249 | 216 | 228 | 204 | 201 | 168 | 161 | 159 | 283 | 251 | 272 |
| 2013 | 287 | 335 | 257 | 209 | 226 | 198 | 167 | 196 | 220 | 253 | 294 | 271 |
| 2014 | 309 | 248 | 261 | 245 | 217 | 212 | 273 | 228 | 248 | 280 | 202 | 196 |
| 2015 | 211 | 207 | 214 | 282 | 199 | 185 | 230 | 297 | 274 | 197 | 302 | 275 |
| 2016 | 313 | 294 | 232 | 259 | 266 | 279 | 226 | 218 | 234 | 249 | 273 | 256 |
| 2017 | 218 | 252 | 239 | 271 | 168 | 196 | 205 | 212 | 298 | 296 | 270 | 260 |
| 2018 | 283 | 254 | 189 | 201 | 194 | 202 | 241 | 250 | 278 | 196 | 244 | 266 |
| 2019 | 351 | 295 | 178 | 212 | 269 | 258 | 236 | 287 | 244 | 238 | 281 | 231 |
| 2020 | 248 | 269 | 313 | 295 | 183 | 235 | 218 | 206 | 302 | 313 | 273 | 256 |
| 2021 | 282 | 238 | 274 | 253 | 241 | 248 | 218 | 254 | 305 | 283 | 253 | 300 |
| 2022 | 287 | 323 | 301 | 253 | 217 | 269 | 279 | 305 | 281 | 237 | 266 | 233 |
| 2023 | 285 | 315 | 345 | 267 | 251 | 248 | 220 | 194 | 229 | 231 | 219 | 269 |
| 2024 | 293 | 292 | 250 | 259 | 273 | 292 | 242 | 267 | 237 | 274 | 277 | 281 |
| 2025 | 261 | 279 | 294 | 241 | 263 | 281 | 280 | 292 | 261 | 330 | 301 | 300 |
| 2026 | 286 | 242 | 230 | 272 | 279 | 268 | ||||||
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 8/31/2026 |
| Next Release Date: 9/30/2026 |