How much cannabis is trafficked each year in Australia?

In 2019-20, there were 12,846 cannabis border detections in Australia which amounted to a total weight of 648 kilograms.

There were 46 cannabis detections weighing one kilogram or more in 2019-20. Combined, these 46 detections weighed 185 kilograms and accounted for 28% of the total weight of cannabis detected in 2019-20.

Source: Australian Crime Commission (2021). Illicit Drug Data Report 2019-20.