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     |
|:----------------|:---------|:---------|:---------|:---------|:---------|
| cme group inc . | $ 164.01 | $ 194.06 | $ 208.95 | $ 279.85 | $ 370.32 |
| s&p 500         | 132.39   | 150.51   | 152.59   | 170.84   | 208.14   |
| peer group      | 176.61   | 187.48   | 219.99   | 249.31   | 323.23   |

Question:
in 2017 what was the ratio of the the cme group inc . stock perfomamce to the s&p


pre_text: performance graph the following graph and table compares the cumulative five-year total return provided to shareholders on our class a common stock relative to the cumulative total returns of the s&p 500 index and our customized peer group .
the peer group includes cboe holdings , inc. , intercontinentalexchange group , inc .
and nasdaq , inc .
an investment of $ 100 ( with reinvestment of all dividends ) is assumed to have been made in our class a common stock , in the peer group and the s&p 500 index on december 31 , 2012 , and its relative performance is tracked through december 31 , 2017 .
comparison of 5 year cumulative total return* among cme group inc. , the s&p 500 index , and a peer group 12/12 12/13 12/14 12/15 12/16 cme group inc .
s&p 500 peer group * $ 100 invested on 12/31/12 in stock or index , including reinvestment of dividends .
fiscal year ending december 31 .
copyright a9 2018 standard & poor 2019s , a division of s&p global .
all rights reserved .
the stock price performance included in this graph is not necessarily indicative of future stock price performance. .
post_text: unregistered sales of equity securities during the past three years there have not been any unregistered sales by the company of equity securities. .
label: 1.77919
qa: answer: 1.8
ann_table_rows: 1
2
steps: op: divide1-1
arg1: 370.32
arg2: 208.14
res: 1.8
program: divide(370.32, 208.14)
gold_inds: table_1: the cme group inc . of 2013 is $ 164.01 ; the cme group inc . of 2014 is $ 194.06 ; the cme group inc . of 2015 is $ 208.95 ; the cme group inc . of 2016 is $ 279.85 ; the cme group inc . of 2017 is $ 370.32 ;
table_2: the s&p 500 of 2013 is 132.39 ; the s&p 500 of 2014 is 150.51 ; the s&p 500 of 2015 is 152.59 ; the s&p 500 of 2016 is 170.84 ; the s&p 500 of 2017 is 208.14 ;
exe_ans: 1.77919
tfidftopn: text_4: comparison of 5 year cumulative total return* among cme group inc. , the s&p 500 index , and a peer group 12/12 12/13 12/14 12/15 12/16 cme group inc .
program_re: divide(370.32, 208.14)
model_input: text_3
an investment of $ 100 ( with reinvestment of all dividends ) is assumed to have been made in our class a common stock , in the peer group and the s&p 500 index on december 31 , 2012 , and its relative performance is tracked through december 31 , 2017 .
table_1
the cme group inc . of 2013 is $ 164.01 ; the cme group inc . of 2014 is $ 194.06 ; the cme group inc . of 2015 is $ 208.95 ; the cme group inc . of 2016 is $ 279.85 ; the cme group inc . of 2017 is $ 370.32 ;
table_2
the s&p 500 of 2013 is 132.39 ; the s&p 500 of 2014 is 150.51 ; the s&p 500 of 2015 is 152.59 ; the s&p 500 of 2016 is 170.84 ; the s&p 500 of 2017 is 208.14 ;