In Singapore, no one fully vaccinated and below 70 years old has died or been in the ICU. Only 0.38% of fully vaccinated patients in their 70s has been in the ICU or died, this rate is actually lower than for unvaccinated people in their 30s which is 0.84%.
Vaccination rates were going up at about 1% per day but tailed off quite sharply after 80% coverage was reached.
A 90% rate will take a very long time to achieve and isn’t really a practical aim before opening up in Australia.