AHC: turn Australian "coups" into actual coups

Somewhat amused by all of the talk of a coup against Theresa May, and it got me thinking, what if so-called "coups" launched by parliamentary parties in the Westminster System turned into actual military coups? My own beloved Australia comes to mind, with something like seven or eight successful or attempted coups in recent years.

With a POD of 1945, make Australia suffer at least four successful coup d'etats within the past ten years.
 
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