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| Midwest (PADD 2) Refinery and Blender Net Production of Propylene (Thousand Barrels per Day) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1993 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1994 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1995 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1996 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1997 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1998 | W | W | W | W | W | W | W | W | W | W | W | W |
| 1999 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2000 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2001 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2002 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2003 | W | W | W | W | W | W | W | W | W | W | W | W |
| 2004 | 30 | 32 | 32 | 33 | 33 | 32 | 34 | 34 | 32 | 35 | 39 | 37 |
| 2005 | 40 | 39 | 33 | 35 | 35 | 30 | 32 | 33 | 35 | 36 | 43 | 40 |
| 2006 | 37 | 37 | 29 | 34 | 33 | 34 | 32 | 32 | 35 | 35 | 38 | 38 |
| 2007 | 31 | 23 | 27 | 26 | 24 | 23 | 22 | 25 | 24 | 17 | 22 | 17 |
| 2008 | 17 | 18 | 18 | 18 | 20 | 20 | 16 | 16 | 15 | 15 | 12 | 13 |
| 2009 | 19 | 24 | 21 | 18 | 25 | 26 | 27 | 25 | 33 | 30 | 30 | 32 |
| 2010 | 36 | 40 | 34 | 34 | 36 | 38 | 39 | 37 | 36 | 37 | 36 | 37 |
| 2011 | 42 | 41 | 41 | 42 | 44 | 41 | 37 | 34 | 42 | 37 | 33 | 35 |
| 2012 | 35 | 37 | 39 | 39 | 38 | 35 | 31 | 30 | 28 | 30 | 30 | 31 |
| 2013 | 33 | 36 | 37 | 30 | 32 | 29 | 37 | 37 | 33 | 36 | 40 | 37 |
| 2014 | 37 | 39 | 27 | 31 | 32 | 33 | 32 | 36 | 35 | 32 | 39 | 43 |
| 2015 | 33 | 31 | 32 | 40 | 42 | 41 | 43 | 42 | 38 | 33 | 41 | 42 |
| 2016 | 43 | 41 | 43 | 45 | 43 | 42 | 39 | 43 | 42 | 37 | 39 | 41 |
| 2017 | 39 | 47 | 49 | 47 | 45 | 42 | 36 | 39 | 37 | 44 | 46 | 47 |
| 2018 | 43 | 42 | 40 | 46 | 45 | 41 | 45 | 43 | 41 | 35 | 44 | 46 |
| 2019 | 46 | 35 | 40 | 44 | 38 | 37 | 42 | 43 | 40 | 34 | 42 | 40 |
| 2020 | 41 | 40 | 39 | 41 | 37 | 35 | 40 | 39 | 42 | 39 | 38 | 44 |
| 2021 | 46 | 43 | 43 | 40 | 42 | 45 | 45 | 48 | 48 | 44 | 41 | 46 |
| 2022 | 47 | 45 | 41 | 41 | 42 | 41 | 43 | 41 | 36 | 31 | 33 | 33 |
| 2023 | 35 | 33 | 37 | 40 | 38 | 39 | 33 | 41 | 37 | 32 | 33 | 38 |
| 2024 | 40 | 32 | 40 | 44 | 42 | 37 | 36 | 40 | 34 | 32 | 38 | 42 |
| 2025 | 44 | 40 | 37 | 35 | 39 | 39 | 43 | 38 | ||||
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 10/31/2025 |
| Next Release Date: 11/28/2025 |