A study from thelancet.com reported:
In India about 20 000 murders are committed every
year, of which women constitute about 10%–15% of the
total, ie, about 2000 to 2500 per year. Homicidal
burning of married women constitutes a significant
proportion of dowry deaths. Although it is difficult to
determine accurate numbers throughout the country,
extrapolation from our data suggests that homicide
may account for 600–750 deaths per year. Others (see
Jutla in recommended reading) suggest the figure may
be much higher. A 2000 New York Times article quoted an
official figure of 6975 dowry deaths in 1998. Because of
the nature of the crime, it is improbable, if not
impossible, to know its true incidence. The
circumstances, however, are commonly described.