for example -
One survey found that only 1% of British men do an equal share of household tasks to their wives (Abrams, 1997, The Playful Self)
In an extensive review of the literature, the difference between the domestic workload of husbands with employed wives and husbands with non-employed wives was found to be exactly ten minutes a day. Husbands overall were doing about 33 per cent of what their wives did around the house; husbands of employed wives about 37 per cent (Steil, 1997, Marital Equality)
In one study of marital equality and well-being, the researcher was forced to abandon her efforts. 'There were too few equally sharing couples to study,' (Steil again)
[S]ociologist, Harriet Presser, found that, when wives go to work outside the home, a third of husbands do more housework and childcare, a third don't change at all, and a third actually do less. (Hochschild, 1997, The Time Bind)
... and on and on, page after page of fucking depressing statistics. Admittedly the stats are a few years old now (the book was written in 2001) and things are probably moving in the right direction, but far too slowly. I haven't noticed any real sea change in the last couple of decades.