The Australian Institute of Criminology has compiled a detailed database of the nearly 6,000 homicides committed in Australia over 18 years (1989-2007), through its National Homicide Monitoring Program (NHMP). Analysis of the NHMP shows that intimate-partner homicide rates have decreased from around 0.5 per 100,000 of the population per year in the late 1980s and early 1990s to 0.4 per 100,000 per year in the early to mid 2000s, a decrease of one-quarter. (The number of such victims each year has remained at 70 to 80 over the collection period.) By comparison, the underlying trend in the rate of other intra-family homicide is relatively unchanged, at about 0.3 per 100,000 per year over the period 1989-2007. The number of victims has ranged from 38, in 2000-01, to 86, in 2001-02.
Source: AIC NHMP 1989-90 to 2006-07 [computer file]