Table:
change in aggregate self-employment rate
change in within-age-group self-employment rate
change in age- group composition

number

1989 to 1998
0.025
0.019
0.005

1998 to 2010
-0.006
-0.020
0.014

Statement: the within-age-group component contributed to a decline of 2.0 percentage points from 1998 to 2010.
Question: how much did the within-age-group component declined from 1998 to 2010?
Answer: [0.02]