> One analysis of 11 rich countries estimates that the average mother spent 54 minutes a day caring for children in 1965 but 104 minutes in 2012. Men do less than women, but far more than men in the past: their child-caring time has jumped from 16 minutes a day to 59.

So that's 70 minutes combined up to 163 combined, or a 133% increase, more than double.

The ratio used to be 77/23, and is now 64/36, mothers/fathers.