From the American Academy of Matrimonial Lawyers [1]:
This Mother's Day, it appears that an increasing number of moms will be setting aside time to sign child support and alimony checks. Overall, 56% of the nation's top divorce attorneys say that they have seen an increase in the number of mothers paying child support during the past three years, while 47% also note a rise in women being responsible for alimony throughout the same time period, according to a recent survey of the American Academy of Matrimonial Lawyers (AAML).
[...]
In all, 56% of AAML members cited an increase in mothers who pay child support, while 44% said no change, and there was not an observed decrease. Additionally, 47% have noticed an increase in the number of women paying alimony, while 53% said no change.
[...]