what point are you raising? It’s an Ec-Dev summary report without ABS job data. Are you new to these things or something?
There’s no data provided to suggest the 604,000 are additional to the 12.8m, or whether they are additional to nominal rate of increase over time.
For instance allowing for predicted population growth by 2030 to 29m, total number of jobs would be approximately 14.5m working on current employment rates, which accounts for an increase of 1.7 million new jobs.
