The Economist Intelligence Unit has made predictions regarding vaccination levels.
https://www.eiu.com/n/85-poor-countr...irus-vaccines/
Having people in wealthy countries vaccinated is what will have most effect on the recovery. To put it bluntly, having Europeans, Japanese and Americans able to travel will speed up the opening of borders. Vaccinating people in developing countries who don’t travel anyway will have least effect.
Looking at the map in the link, important markets for Australia could be available towards the end of this year with an increasing number next year.