A yearly grouped time series dataset, from 1901 to 2003, of infant mortality counts (deaths) in Australia; disaggregated by state (see below), and sex (male and female).
infantMortality
List of time series of class ts.
States: New South Wales (NSW), Victoria (VIC), Queensland (QLD), South Australia (SA), Western Australia (WA), Northern Territory (NT), Australian Capital Territory (ACT), and Tasmania (TAS).
Hyndman, R.J., Ahmed, R.A., Athanasopoulos, G., Shang, H.L. (2011). Optimal combination forecasts for hierarchical time series. Computational Statistics and Data Analysis, 55(9), 2579-2589.