I think the next generation will come from India. That's my prediction.
The government has signed an agreement to allow 40000+ workers to come to Australia to fill the skills shortage in Australia left by the mining boom.
Expect to see lots of chaps in GA as AMEs wanting to turn a spanner if it means the opportunity to earn more than home,and the possibility of a residency visa in the future.
This is quickly becoming a profession for people from 3rd world countries with only a smattering of locals taking up an apprenticeship in Australia.