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:
| asset retirement liability as of september 29 2002   | $ 5.5   |
|:-----------------------------------------------------|:--------|
| additional asset retirement obligations recognized   | 0.5     |
| accretion recognized                                 | 1.2     |
| asset retirement liability as of september 27 2003   | $ 7.2   |
| additional asset retirement obligations recognized   | 0.5     |
| accretion recognized                                 | 0.5     |
| asset retirement liability as of september 25 2004   | $ 8.2   |

Question:
what was the net change in asset retirement liability between 2002 and september 25 2004 , in millions?


pre_text: notes to consolidated financial statements ( continued ) note 1 2014summary of significant accounting policies ( continued ) the following table reconciles changes in the company 2019s asset retirement liabilities for fiscal 2003 and 2004 ( in millions ) : .
post_text: long-lived assets including goodwill and other acquired intangible assets the company reviews property , plant , and equipment and certain identifiable intangibles , excluding goodwill , for impairment whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable .
recoverability of these assets is measured by comparison of its carrying amount to future undiscounted cash flows the assets are expected to generate .
if property , plant , and equipment and certain identifiable intangibles are considered to be impaired , the impairment to be recognized equals the amount by which the carrying value of the assets exceeds its fair market value .
for the three years ended september 25 , 2004 , september 27 , 2003 , and september 28 , 2002 the company had no material impairment of its long-lived assets , except for the impairment of certain assets in connection with the restructuring actions described in note 5 .
the company adopted sfas no .
142 , goodwill and other intangible assets , in the first quarter of fiscal 2002 .
sfas no .
142 requires that goodwill and intangible assets with indefinite useful lives no longer be amortized , but instead be tested for impairment at least annually or sooner whenever events or changes in circumstances indicate that they may be impaired .
prior to fiscal 2002 , goodwill was amortized using the straight-line method over its estimated useful life .
the company completed its transitional goodwill impairment test as of october 1 , 2001 , and its annual goodwill impairment tests on august 30 of each year thereafter and found no impairment .
the company established reporting units based on its current reporting structure .
for purposes of testing goodwill for impairment , goodwill has been allocated to these reporting units to the extent it relates to each reporting unit .
sfas no .
142 also requires that intangible assets with definite lives be amortized over their estimated useful lives and reviewed for impairment in accordance with sfas no .
144 , accounting for the impairment of long-lived assets and for long-lived assets to be disposed of .
the company is currently amortizing its acquired intangible assets with definite lives over periods ranging from 3 to 10 years .
foreign currency translation the company translates the assets and liabilities of its international non-u.s .
functional currency subsidiaries into u.s .
dollars using exchange rates in effect at the end of each period .
revenue and expenses for these subsidiaries are translated using rates that approximate those in effect during the period .
gains and losses from these translations are credited or charged to foreign currency translation included in 2018 2018accumulated other comprehensive income ( loss ) 2019 2019 in shareholders 2019 equity .
the company 2019s foreign manufacturing subsidiaries and certain other international subsidiaries that use the u.s .
dollar as their functional currency remeasure monetary assets and liabilities at exchange rates in effect at the end of each period , and inventories , property , and nonmonetary assets and liabilities at historical rates .
gains and .
label: 2.7
qa: answer: 2.7
steps: op: minus1-1
arg1: 8.2
arg2: 5.5
res: 2.7
program: subtract(8.2, 5.5)
gold_inds: table_6: asset retirement liability as of september 29 2002 the asset retirement liability as of september 25 2004 of $ 5.5 is $ 8.2 ;
table_0: asset retirement liability as of september 29 2002 the asset retirement liability as of september 29 2002 of $ 5.5 is $ 5.5 ;
exe_ans: 2.7
tfidftopn: table_3: asset retirement liability as of september 29 2002 The asset retirement liability as of september 27 2003 of $ 5.5 is $ 7.2 ;
program_re: subtract(8.2, 5.5)
model_input: table_0
asset retirement liability as of september 29 2002 the asset retirement liability as of september 29 2002 of $ 5.5 is $ 5.5 ;
table_3
asset retirement liability as of september 29 2002 the asset retirement liability as of september 27 2003 of $ 5.5 is $ 7.2 ;
table_6
asset retirement liability as of september 29 2002 the asset retirement liability as of september 25 2004 of $ 5.5 is $ 8.2 ;