Where can i find a site that gives me statistics for the contribution in household chores within the home?

i am doing this for Gcse sociology and i want to find some statistics for the contribution of men women and children in household chores.

Where can i find a site that gives me statistics for the contribution in household chores within the home?
Some here:


http://asweb.artsci.uc.edu/sociology/rel...





Some here:


http://asweb.artsci.uc.edu/sociology/kun...





And some here:


http://www.economica.ca/ew12p2.htm