The rate of domestic violence dropped, in half, between 1993 and 2004. Everything you’d expect is still true, however: women who own homes are less likely to be beaten than those with low annual incomes; black women are more likely than white women to be beaten, and domestic violence against men is dropping faster than violence against women.
Analysts speculate that the lower rate of intimate violence may be linked to better police training and more funding for prosecution as a result of the 1994 Violence Against Women Act or the declining violent crime rate in general (it reached its lowest recorded level in 2005).
From the Bureau of Justice Statistics.