The Human Mortality Database is a wonderful resource for anyone interested in demographic data. It is a carefully curated collection of high quality deaths and population data from 37 countries, all in a consistent format with consistent definitions. I have used it many times and never cease to be amazed at the care taken to maintain such a great resource.
The data are continually being revised and updated. Today the Australian data has been updated to 2011. There is a time lag because of lagged death registrations which results in undercounts; so only data that are likely to be complete are included.
Tim Riffe from the HMD has provided the following information about the update:
- All death counts since 1964 are now included by year of occurrence, up to 2011. We have 2012 data but do not publish them because they are likely a 5% undercount due to lagged registration.
- Death count inputs for 1921 to 1963 are now in single ages. Previously they were in 5-year age groups. Rather than having an open age group of 85+ in this period counts usually go up to the maximum observed (stated) age. This change (i) introduces minor heaping in early years and (ii) implies different apparent old-age mortality than before, since previously anything above 85 was modeled according to the Methods Protocol.
- Population denominators have been swapped out for years 1992 to the present, owing to new ABS methodology and intercensal estimates for the recent period.