Simon Birmingham (SA, Liberal Party, Assistant Minister for Education and Training) Share this | Hansard source

There is a rich array of data in this space. You asked what would be used as the benchmark. I imagine people would usually look to the time changes occur as a benchmark, but there is quite a bit of historical data as well. People will choose in their debates—as they often do in this place—whatever benchmark data source they wish at the time of debate. I have no doubt you will do this yourself, Senator Rice.