Top 5 Countries With Highest Drug Consumption

2. Commonwealth of Australia

Insider Monkey’s Score: 6

The Commonwealth of Australia, or Australia, is a large Oceanic country. One of the more prosperous nations in the world, it has a $1.7 trillion economy and a GDP per capita of $64,964. Australia has the highest percentage of cocaine users in the world, with 4.2% of its population using the drug. At the same time, it ranks sixth in opioid use and fifth in amphetamine use. Naturally, it’s unsurprising that Australia ranks second on the list of countries with the highest drug use.