Task: Table-QA (source dataset: FinQA)

Task: 
You are given a table containing structured data and a natural language question referring to the table. Your goal is to analyze the table and provide an accurate and concise answer based on the given data.

Instructions:
1. Understand the Table: Examine the structure, headers, and data in the table. Identify relevant columns and rows related to the question.
2. Interpret the Question: Determine whether the question requires direct retrieval, aggregation, comparison, sorting, filtering, or inference.
3. Extract the Answer: Use logical reasoning and numerical operations (if necessary) to derive the correct response from the table.
4. Format the Answer: No explanation, return the answer in a structured JSON format: {"answer": <answer>}. If the question cannot be answered due to missing or ambiguous data, return a JSON response with {"answer": null}.

Table:
| Unnamed: 0            | amount ( in millions )   |
|:----------------------|:-------------------------|
| 2015 net revenue      | $ 696.3                  |
| retail electric price | 12.9                     |
| volume/weather        | 4.7                      |
| net wholesale revenue | -2.4 ( 2.4 )             |
| reserve equalization  | -2.8 ( 2.8 )             |
| other                 | -3.3 ( 3.3 )             |
| 2016 net revenue      | $ 705.4                  |

Question:
what is the net change in net revenue during 20016 for entergy mississippi , inc.?


pre_text: entergy mississippi , inc .
management 2019s financial discussion and analysis results of operations net income 2016 compared to 2015 net income increased $ 16.5 million primarily due to lower other operation and maintenance expenses , higher net revenues , and a lower effective income tax rate , partially offset by higher depreciation and amortization expenses .
2015 compared to 2014 net income increased $ 17.9 million primarily due to the write-off in 2014 of the regulatory assets associated with new nuclear generation development costs as a result of a joint stipulation entered into with the mississippi public utilities staff , subsequently approved by the mpsc , partially offset by higher depreciation and amortization expenses , higher taxes other than income taxes , higher other operation and maintenance expenses , and lower net revenue .
see note 2 to the financial statements for discussion of the new nuclear generation development costs and the joint stipulation .
net revenue 2016 compared to 2015 net revenue consists of operating revenues net of : 1 ) fuel , fuel-related expenses , and gas purchased for resale , 2 ) purchased power expenses , and 3 ) other regulatory charges ( credits ) .
following is an analysis of the change in net revenue comparing 2016 to 2015 .
amount ( in millions ) .
post_text: the retail electric price variance is primarily due to a $ 19.4 million net annual increase in revenues , as approved by the mpsc , effective with the first billing cycle of july 2016 , and an increase in revenues collected through the storm damage rider .
see note 2 to the financial statements for more discussion on the formula rate plan and the storm damage rider .
the volume/weather variance is primarily due to an increase of 153 gwh , or 1% ( 1 % ) , in billed electricity usage , including an increase in industrial usage , partially offset by the effect of less favorable weather on residential and commercial sales .
the increase in industrial usage is primarily due to expansion projects in the pulp and paper industry , increased demand for existing customers , primarily in the metals industry , and new customers in the wood products industry. .
label: 9.1
qa: answer: 9.1
ann_table_rows: 1
7
steps: op: minus2-1
arg1: 705.4
arg2: 696.3
res: 9.1
program: subtract(705.4, 696.3)
gold_inds: table_1: the 2015 net revenue of amount ( in millions ) is $ 696.3 ;
table_7: the 2016 net revenue of amount ( in millions ) is $ 705.4 ;
exe_ans: 9.1
tfidftopn: text_0: entergy mississippi , inc .
program_re: subtract(705.4, 696.3)
model_input: table_1
the 2015 net revenue of amount ( in millions ) is $ 696.3 ;
table_4
the net wholesale revenue of amount ( in millions ) is -2.4 ( 2.4 ) ;
table_7
the 2016 net revenue of amount ( in millions ) is $ 705.4 ;