Less Income/Less Immigration, page-59

Hard to find data on Australia but I suspect similar numbers to the USA

https://www.google.com.au/amp/s/mobile.reuters.com/article/amp/idUSKBN1O32FR


“Researchers who analyzed U.S. census data on 164,000 health care professionals found that overall, almost 17 percent weren't born in America and almost five percent were not U.S. citizens.

"The American health care system relies very heavily on individuals who were born in other countries," said senior study author Dr. Anupam Jena of Harvard Medical School and Massachusetts General Hospital in Boston.”

Stealing the doctors dentists etc from poor countries with lower life expectancies is pretty poor form I would have thought as an example