Table:
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

percent
percentage points

2015 to 2017
1.59
1.82
0.23

2015
0.67
1.00
0.33

2016
1.10
1.41
0.31

2017
2.99
3.05
0.06

Statement: the mean absolute percentage point revision to the annual growth rate of real gdp for the 2015 to 2017 period was 0.2.
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]