Table:
1999
2012

coefficient
bootstrap standard error
coefficient
bootstrap standard error

top after-tax income quintile
0.318
0.028
0.679
0.023

bottom after-tax income quintile
0.098
0.011
0.253
0.025

top after-tax income quintile minus bottom after-tax income quintile
0.219
0.030
0.426
0.035

explained portion of difference
0.136
0.028
0.302
0.051

unexplained portion of difference
0.083
0.044
0.123
0.070

detailed explained components

net worth
0.077
0.025
0.184
0.044

parental education
0.052
0.017
0.103
0.023

parental age
0.007
0.009
-0.008
0.017

parental marital status
0.007
0.006
0.031
0.015

number of children
-0.008
0.005
-0.012
0.008

age of youngest child
0.004
0.007
0.003
0.018

age of oldest child
-0.011
0.006
-0.009
0.013

region
0.008
0.005
0.005
0.005

urban/rural status
-0.001
0.005
0.005
0.003

Statement: the gap in resp participation between families in the top and bottom income quintiles almost doubled between 1999 and 2012.
Question: how many times was the gap in resp participation between families in the top and bottom income quintiles in 2012 than that in 1999?
Answer: [1.945205]