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| Midwest (PADD 2) API Gravity (Weighted Average) of Crude Oil Input to Refineries (Degree) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1985 | 36.22 | 36.33 | 36.29 | 35.82 | 35.69 | 35.12 | 34.78 | 35.10 | 35.25 | 34.96 | 35.06 | 35.50 |
| 1986 | 35.46 | 35.86 | 36.00 | 35.86 | 35.62 | 34.65 | 34.36 | 34.59 | 34.52 | 34.78 | 34.78 | 34.97 |
| 1987 | 35.51 | 35.46 | 35.85 | 35.79 | 35.49 | 34.79 | 34.83 | 34.89 | 35.00 | 35.13 | 35.01 | 35.38 |
| 1988 | 35.53 | 35.47 | 35.52 | 35.08 | 34.95 | 34.21 | 34.14 | 34.19 | 34.62 | 34.60 | 35.26 | 35.16 |
| 1989 | 35.33 | 34.99 | 34.84 | 35.16 | 34.81 | 34.48 | 34.50 | 34.25 | 34.43 | 34.44 | 34.90 | 34.73 |
| 1990 | 34.97 | 34.82 | 35.00 | 34.35 | 34.62 | 34.34 | 34.10 | 34.31 | 34.23 | 34.44 | 34.12 | 34.81 |
| 1991 | 34.76 | 34.67 | 34.75 | 34.88 | 34.21 | 33.91 | 33.85 | 33.63 | 33.64 | 33.87 | 34.27 | 34.42 |
| 1992 | 33.81 | 33.90 | 34.24 | 34.27 | 34.18 | 34.14 | 33.85 | 33.84 | 33.68 | 33.55 | 33.82 | 34.08 |
| 1993 | 33.90 | 34.31 | 33.97 | 34.17 | 34.09 | 33.81 | 33.55 | 33.32 | 33.46 | 33.32 | 33.27 | 33.82 |
| 1994 | 33.98 | 34.13 | 34.11 | 33.60 | 34.41 | 34.05 | 34.42 | 34.11 | 34.72 | 34.36 | 34.05 | 35.06 |
| 1995 | 34.92 | 34.25 | 35.06 | 34.27 | 34.35 | 33.89 | 32.99 | 33.66 | 33.54 | 33.49 | 33.20 | 34.64 |
| 1996 | 34.21 | 34.30 | 34.73 | 34.38 | 34.88 | 33.57 | 34.20 | 33.48 | 33.44 | 33.31 | 33.17 | 33.43 |
| 1997 | 34.07 | 34.07 | 34.28 | 34.15 | 32.88 | 32.91 | 33.06 | 32.67 | 32.74 | 33.01 | 33.43 | 32.83 |
| 1998 | 33.12 | 32.76 | 33.32 | 33.09 | 32.95 | 32.86 | 32.72 | 32.98 | 32.94 | 32.69 | 32.85 | 33.01 |
| 1999 | 33.28 | 33.46 | 33.59 | 33.59 | 33.60 | 33.39 | 32.96 | 33.28 | 33.49 | 33.45 | 33.16 | 33.18 |
| 2000 | 33.40 | 33.14 | 33.64 | 33.55 | 33.06 | 33.32 | 32.75 | 32.67 | 32.71 | 32.37 | 32.95 | 32.83 |
| 2001 | 33.23 | 32.67 | 32.95 | 32.82 | 32.65 | 32.73 | 32.88 | 32.54 | 33.03 | 32.66 | 32.30 | 32.87 |
| 2002 | 32.99 | 33.14 | 33.41 | 32.78 | 33.55 | 32.69 | 32.92 | 32.63 | 32.11 | 32.39 | 32.70 | 32.72 |
| 2003 | 32.80 | 32.63 | 32.87 | 32.36 | 32.16 | 32.39 | 32.22 | 32.39 | 33.39 | 32.83 | 32.26 | 31.84 |
| 2004 | 32.14 | 32.22 | 32.03 | 32.01 | 32.05 | 32.20 | 31.88 | 32.48 | 32.02 | 31.84 | 31.55 | 31.12 |
| 2005 | 31.42 | 31.72 | 32.05 | 31.88 | 31.92 | 31.97 | 31.96 | 32.15 | 32.01 | 32.34 | 32.03 | 32.01 |
| 2006 | 31.67 | 31.32 | 31.89 | 31.89 | 32.40 | 32.38 | 32.05 | 32.13 | 31.98 | 32.12 | 32.05 | 32.04 |
| 2007 | 32.00 | 32.07 | 32.03 | 32.65 | 32.83 | 32.37 | 32.14 | 32.22 | 32.47 | 32.51 | 31.76 | 32.01 |
| 2008 | 32.40 | 32.31 | 32.63 | 32.73 | 32.48 | 32.33 | 32.13 | 32.48 | 32.77 | 33.19 | 32.52 | 32.55 |
| 2009 | 32.60 | 32.83 | 32.44 | 32.67 | 33.11 | 32.13 | 32.64 | 32.49 | 33.26 | 33.17 | 32.55 | 33.28 |
| 2010 | 33.55 | 33.78 | 33.14 | 33.24 | 32.91 | 33.08 | 32.40 | 33.22 | 33.72 | 33.56 | 33.67 | 33.17 |
| 2011 | 33.08 | 32.81 | 32.93 | 33.29 | 33.58 | 33.61 | 33.47 | 33.02 | 33.13 | 33.25 | 33.13 | 33.52 |
| 2012 | 33.50 | 33.38 | 33.15 | 33.18 | 33.38 | 32.86 | 33.02 | 32.87 | 33.51 | 33.47 | 32.79 | 33.02 |
| 2013 | 33.00 | 32.72 | ||||||||||
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 4/29/2013 |
| Next Release Date: Last Week of May 2013 |