There has been a paucity of information about illicit drug use in Australia up to date. Available figures refer either to persons admitted to mental health and other treatment facilities (Krupinski and Stoller, 1964-1971, Ma and Edmonds, 1969; Wheeler and Edmonds, 1969; Whitlock and Lourey, 1967), to drug offenders (Davis and Milte, 1970; Kyte-Powell, 1968), or both (Le Fevre, 1971).
Although these data cannot be regarded reliably as even the tip of an iceberg, they are indicative of a recent growth in illicit drug usage. Thus, the number of drug offenders in Victoria increased from 60 in 1965 to 160 in 1967 (Kyte-Powell, 1968). A survey carried out in New South Wales (le Fevre, 1971} identified 2,182 drug offenders born after 1939 who were recorded during the period 1965-1969. Since May 1969, the Central Crime Intelligence Bureau of the Commonwealth Police Force has been systematically collecting information on drug offenders throughout Australia (Davis and Milte, 1970) and, within a year, they gathered 5000 files on persons convicted or charged with an offence relating to drugs in Australia.