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                      | ( in millions )   |
|:--------------------------------|:------------------|
| 2003 net revenue                | $ 973.7           |
| price applied to unbilled sales | -31.9 ( 31.9 )    |
| deferred fuel cost revisions    | -29.4 ( 29.4 )    |
| rate refund provisions          | -12.2 ( 12.2 )    |
| volume/weather                  | 17.0              |
| summer capacity charges         | 11.8              |
| other                           | 2.3               |
| 2004 net revenue                | $ 931.3           |

Question:
what is the net change in net revenue during 2004 for entergy louisiana?


pre_text: entergy louisiana , inc .
management's financial discussion and analysis results of operations net income 2004 compared to 2003 net income decreased $ 18.7 million primarily due to lower net revenue , partially offset by lower other operation and maintenance expenses .
2003 compared to 2002 net income increased slightly primarily due to higher net revenue and lower interest charges , almost entirely offset by higher other operation and maintenance expenses , higher depreciation and amortization expenses , and higher taxes other than income taxes .
net revenue 2004 compared to 2003 net revenue , which is entergy louisiana's measure of gross margin , consists of operating revenues net of : 1 ) fuel , fuel-related , and purchased power expenses and 2 ) other regulatory credits .
following is an analysis of the change in net revenue comparing 2004 to 2003. .
post_text: the price applied to the unbilled sales variance is due to a decrease in the fuel price included in unbilled sales in 2004 caused primarily by the effect of nuclear plant outages in 2003 on average fuel costs .
the deferred fuel cost revisions variance resulted from a revised unbilled sales pricing estimate made in the first quarter of 2003 to more closely align the fuel component of that pricing with expected recoverable fuel costs .
rate refund provisions caused a decrease in net revenue due to additional provisions recorded in 2004 compared to 2003 for potential rate actions and refunds .
the volume/weather variance is due to a total increase of 620 gwh in weather-adjusted usage in all sectors , partially offset by the effect of milder weather on billed sales in the residential and commercial sectors .
the summer capacity charges variance is due to the amortization in 2003 of deferred capacity charges for the summer of 2001 compared to the absence of the amortization in 2004 .
the amortization of these capacity charges began in august 2002 and ended in july 2003. .
label: -42.4
qa: answer: -42.4
ann_table_rows: 1
8
steps: op: minus2-1
arg1: 931.3
arg2: 973.7
res: -42.4
program: subtract(931.3, 973.7)
gold_inds: table_1: the 2003 net revenue of ( in millions ) is $ 973.7 ;
table_8: the 2004 net revenue of ( in millions ) is $ 931.3 ;
exe_ans: -42.4
tfidftopn: text_0: entergy louisiana , inc .
program_re: subtract(931.3, 973.7)
model_input: text_4
following is an analysis of the change in net revenue comparing 2004 to 2003. .
table_1
the 2003 net revenue of ( in millions ) is $ 973.7 ;
table_8
the 2004 net revenue of ( in millions ) is $ 931.3 ;