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: there is a 0.5-percentage-point contribution in the 1989-to-1998 period in terms of change in age-group composition.
Question: what's the percent changed of the aggregate self-employment rate in the 1989-to-1998 period in age-group composition?
Answer: [0.005]