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:
| ( in millions of u.s . dollars except for percentages )   | 2010 market value   | 2010 percentage of total   | 2010 market value.1   | percentageof total   |
|:----------------------------------------------------------|:--------------------|:---------------------------|:----------------------|:---------------------|
| treasury                                                  | $ 2075              | 4% ( 4 % )                 | $ 2068                | 5% ( 5 % )           |
| agency                                                    | 2015                | 4% ( 4 % )                 | 2698                  | 6% ( 6 % )           |
| corporate and asset-backed securities                     | 15900               | 33% ( 33 % )               | 13537                 | 30% ( 30 % )         |
| mortgage-backed securities                                | 12362               | 25% ( 25 % )               | 11311                 | 25% ( 25 % )         |
| municipal                                                 | 2449                | 5% ( 5 % )                 | 2300                  | 5% ( 5 % )           |
| non-u.s .                                                 | 12199               | 25% ( 25 % )               | 11172                 | 25% ( 25 % )         |
| short-term investments                                    | 1983                | 4% ( 4 % )                 | 1667                  | 4% ( 4 % )           |
| total                                                     | $ 48983             | 100% ( 100 % )             | $ 44753               | 100% ( 100 % )       |
| aaa                                                       | $ 23718             | 48% ( 48 % )               | $ 22884               | 51% ( 51 % )         |
| aa                                                        | 4714                | 10% ( 10 % )               | 4021                  | 9% ( 9 % )           |
| a                                                         | 8482                | 17% ( 17 % )               | 7461                  | 17% ( 17 % )         |
| bbb                                                       | 5487                | 11% ( 11 % )               | 4910                  | 11% ( 11 % )         |
| bb                                                        | 3357                | 7% ( 7 % )                 | 2866                  | 6% ( 6 % )           |
| b                                                         | 2393                | 5% ( 5 % )                 | 2029                  | 5% ( 5 % )           |
| other                                                     | 832                 | 2% ( 2 % )                 | 582                   | 1% ( 1 % )           |
| total                                                     | $ 48983             | 100% ( 100 % )             | $ 44753               | 100% ( 100 % )       |

Question:
what is the percentage change in the balance of short-term investments in 2010?


pre_text: the fair value of our total investments increased $ 4.8 billion during 2010 , primarily due to unrealized appreciation , the inves- ting of operating cash flows , and the portfolios acquired in the 2010 corporate acquisitions .
the following tables show the market value of our fixed maturities and short-term investments at december 31 , 2010 and 2009 .
the first table lists investments according to type and the second according to s&p credit rating. .
post_text: .
label: 0.18956
qa: answer: 19.0%
ann_table_rows: 7
8
steps: op: minus1-1
arg1: 1983
arg2: 1667
res: 316
op: divide1-2
arg1: #0
arg2: 1667
res: 19.0%
program: subtract(1983, 1667), divide(#0, 1667)
gold_inds: table_7: ( in millions of u.s . dollars except for percentages ) the short-term investments of 2010 market value is 1983 ; the short-term investments of 2010 percentage of total is 4% ( 4 % ) ; the short-term investments of 2010 market value is 1667 ; the short-term investments of percentageof total is 4% ( 4 % ) ;
table_8: ( in millions of u.s . dollars except for percentages ) the total of 2010 market value is $ 48983 ; the total of 2010 percentage of total is 100% ( 100 % ) ; the total of 2010 market value is $ 44753 ; the total of percentageof total is 100% ( 100 % ) ;
exe_ans: 0.18956
tfidftopn: text_1: the following tables show the market value of our fixed maturities and short-term investments at december 31 , 2010 and 2009 .
program_re: divide(subtract(1983, 1667), 1667)
model_input: table_7
( in millions of u.s . dollars except for percentages ) the short-term investments of 2010 market value is 1983 ; the short-term investments of 2010 percentage of total is 4% ( 4 % ) ; the short-term investments of 2010 market value is 1667 ; the short-term investments of percentageof total is 4% ( 4 % ) ;
table_8
( in millions of u.s . dollars except for percentages ) the total of 2010 market value is $ 48983 ; the total of 2010 percentage of total is 100% ( 100 % ) ; the total of 2010 market value is $ 44753 ; the total of percentageof total is 100% ( 100 % ) ;
table_16
( in millions of u.s . dollars except for percentages ) the total of 2010 market value is $ 48983 ; the total of 2010 percentage of total is 100% ( 100 % ) ; the total of 2010 market value is $ 44753 ; the total of percentageof total is 100% ( 100 % ) ;