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|View History: Annual Download Data (XLS File)                                                
|View History: Annual                                                                          
|View History: Annual                                                                          
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|Massachusetts Natural Gas % of Total Industrial Delivered for the Account of Others  (Percent)
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|Massachusetts Natural Gas % of Total Industrial Delivered for the Account of Others  (Percent)
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|Decade                                                                                                                            | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9
|--------------------------------------------------------------------------------------------------------------------------------- | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------ | ------
|1980's                                                                                                                            |        |        |        |        |        |        |        |        |        | 1.6   
|1990's                                                                                                                            | 9.7    | 29.0   | 54.6   | 69.4   | 72.3   | 68.5   | 74.1   | 66.2   | 73.8   | 63.1  
|2000's                                                                                                                            | 72.7   | 73.7   | 80.0   | 54.6   | 61.8   | 63.5   | 65.6   | 70.1   | 79.4   | 78.9  
|2010's                                                                                                                            | 78.4   | 79.4   | 82.3   | 81.7   | 77.7   | 73.4   | 74.2   | 73.6   | 73.4   | 74.1  
|2020's                                                                                                                            | 75.7   | 74.8   | 71.6   |        |        |        |        |        |        |       
|- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
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|Release Date: 7/31/2024                                                                                                          
|Next Release Date: 8/30/2024