Morwell figures look like this over the 6 year period studied ..

... for this area, the month of Jan is included to show the harvesting effect had temporarily lowered the death stats during the minefire period....

The Health department figures however take a small section of this, the time when the town was evacuated and after the summer harvesting effect and came up with this graph claiming deaths were lower during the minefire by some 19%

The Govt Stats Page goes into this more.