| 1 | A | B | C | D |
| --- | --- | --- | --- | --- |
| 2 | revisions to the growth of real gross domestic product, annual |  |  |  |
| 3 |  | revised average growth in annual real gdp | previously published average growth in annual real gdp | mean absolute revision to the growth in annual real gdp |
| 4 |  | percent |  | percentage points |
| 5 | 2015 to 2017 | 1.59 | 1.82 | 0.23 |
| 6 | 2015 | 0.67 | 1.00 | 0.33 |
| 7 | 2016 | 1.10 | 1.41 | 0.31 |
| 8 | 2017 | 2.99 | 3.05 | 0.06 |

Question: how many the mean absolute percentage point was revision to the annual growth rate of real gdp for the 2015 to 2017 period?
Answer: 0.23