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                            | 2013     | 2014     | 2015     | 2016     | 2017     |
|:--------------------------------------|:---------|:---------|:---------|:---------|:---------|
| masco                                 | $ 138.48 | $ 155.26 | $ 200.79 | $ 227.08 | $ 318.46 |
| s&p 500 index                         | $ 132.04 | $ 149.89 | $ 151.94 | $ 169.82 | $ 206.49 |
| s&p industrials index                 | $ 140.18 | $ 153.73 | $ 149.83 | $ 177.65 | $ 214.55 |
| s&p consumer durables & apparel index | $ 135.84 | $ 148.31 | $ 147.23 | $ 138.82 | $ 164.39 |

Question:
what was the percentage of the growth of the s&p 500 index from 2016 to 2017


pre_text: performance graph the table below compares the cumulative total shareholder return on our common stock with the cumulative total return of ( i ) the standard & poor's 500 composite stock index ( "s&p 500 index" ) , ( ii ) the standard & poor's industrials index ( "s&p industrials index" ) and ( iii ) the standard & poor's consumer durables & apparel index ( "s&p consumer durables & apparel index" ) , from december 31 , 2012 through december 31 , 2017 , when the closing price of our common stock was $ 43.94 .
the graph assumes investments of $ 100 on december 31 , 2012 in our common stock and in each of the three indices and the reinvestment of dividends .
the table below sets forth the value , as of december 31 for each of the years indicated , of a $ 100 investment made on december 31 , 2012 in each of our common stock , the s&p 500 index , the s&p industrials index and the s&p consumer durables & apparel index and includes the reinvestment of dividends. .
post_text: $ 50.00 $ 100.00 $ 150.00 $ 200.00 $ 250.00 $ 300.00 $ 350.00 masco s&p 500 index s&p industrials index s&p consumer durables & apparel index .
label: 0.21593
qa: answer: 21.6%
explanation: the s&p 500 index increased by 21.6% from 2016 to 2017
ann_table_rows: 2
steps: op: minus2-1
arg1: 206.49
arg2: 169.82
res: 36.67
op: divide2-2
arg1: #0
arg2: 169.82
res: 21.6%
program: subtract(206.49, 169.82), divide(#0, 169.82)
gold_inds: table_2: the s&p 500 index of 2013 is $ 132.04 ; the s&p 500 index of 2014 is $ 149.89 ; the s&p 500 index of 2015 is $ 151.94 ; the s&p 500 index of 2016 is $ 169.82 ; the s&p 500 index of 2017 is $ 206.49 ;
exe_ans: 0.21593
tfidftopn: table_3: The s&p industrials index of 2013 is $ 140.18 ; The s&p industrials index of 2014 is $ 153.73 ; The s&p industrials index of 2015 is $ 149.83 ; The s&p industrials index of 2016 is $ 177.65 ; The s&p industrials index of 2017 is $ 214.55 ;
text_0: performance graph the table below compares the cumulative total shareholder return on our common stock with the cumulative total return of ( i ) the standard & poor's 500 composite stock index ( "s&p 500 index" ) , ( ii ) the standard & poor's industrials index ( "s&p industrials index" ) and ( iii ) the standard & poor's consumer durables & apparel index ( "s&p consumer durables & apparel index" ) , from december 31 , 2012 through december 31 , 2017 , when the closing price of our common stock was $ 43.94 .
program_re: divide(subtract(206.49, 169.82), 169.82)
model_input: table_2
the s&p 500 index of 2013 is $ 132.04 ; the s&p 500 index of 2014 is $ 149.89 ; the s&p 500 index of 2015 is $ 151.94 ; the s&p 500 index of 2016 is $ 169.82 ; the s&p 500 index of 2017 is $ 206.49 ;
table_3
the s&p industrials index of 2013 is $ 140.18 ; the s&p industrials index of 2014 is $ 153.73 ; the s&p industrials index of 2015 is $ 149.83 ; the s&p industrials index of 2016 is $ 177.65 ; the s&p industrials index of 2017 is $ 214.55 ;
table_4
the s&p consumer durables & apparel index of 2013 is $ 135.84 ; the s&p consumer durables & apparel index of 2014 is $ 148.31 ; the s&p consumer durables & apparel index of 2015 is $ 147.23 ; the s&p consumer durables & apparel index of 2016 is $ 138.82 ; the s&p consumer durables & apparel index of 2017 is $ 164.39 ;