The use of cannabis in New Zealand is regulated by the Misuse of Drugs Act 1975, which makes unauthorised possession of any amount of cannabis a crime. Cannabis is the fourth-most widely used recreational drug in New Zealand, after caffeine, alcohol and tobacco, and the most widely used illicit drug. In 2001 a household survey revealed that 13.4% of New Zealanders aged 15–64 used cannabis. This ranked as the ninth-highest cannabis consumption level in the world.