American Prescription Drug Use 

“The average number of prescriptions [drugs] per 
person, annually, in 1993 was seven. 
The average number of prescriptions [drugs] per 
person, annually, in 2000 was eleven. 
[The average number of prescriptions drugs per 
person], annually, in 2004 was twelve. 
The total number of annual prescriptions [drugs] in 
the United States now stands at about 3 billion. 
The cost per year [...]