View History:    Monthly     Annual   
Download Data (XLS File)
Rocky Mountain (PADD 4) Refinery Stocks of Isobutane (Thousand Barrels)
Rocky Mountain (PADD 4) Refinery Stocks of Isobutane (Thousand Barrels)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  2010 110 112 112 81 135 105 98 121 110 106 104 98
  2011 104 102 133 120 123 140 121 120 87 113 110 106
  2012 111 107 103 111 117 124 101 73 114 100 143 94
  2013 117 150 95 100 98 83 77 72 105 112 81 86
  2014 107 82 112 85 80 90 107 107 126 116 107 111
  2015 123 115 100 112 71 93 101 109 102 101 123 143
  2016 97 129 117 80 83 78 86 120 92 92 111 100
  2017 101 89 89 93 111 95 105 86 102 100 104 101
  2018 108 107 77 94 76 73 71 82 58 65 97 83
  2019 108 158 171 79 88 117 100 82 79 104 87 84
  2020 94 104 106 93 88 91 74 87 86 96 85 77
  2021 75 71 104 99 94 70 75 92 93 72 101 97
  2022 136 125 107 114 100 102 105 87 80 79 80 74
  2023 102 90 82 57 94 79 67 96 116 76 111 118
  2024 153 101 93 121 99 100 112 110 91 112 108 109

- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 2/28/2025
Next Release Date: 3/31/2025

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