1period,n,intercept,slope,slope_se2full 1960Q1-2019Q4,240,0.184388,-0.255768,0.0359853sub1 1960Q1-1983Q4,96,0.254233,-0.259021,0.0392174sub2 1984Q1-2019Q4,144,0.151686,-0.273393,0.0687945
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