Percentage of workers in indemnity plans and in prepaid plans subject to copayment per prescription, by amount of copayment, private industry, 1993, 1997, and 2000 Percent 1993 1997 2000 Less than $10 Indemnity plans 74 26 12 Prepaid plans 87 49 9 $10 or more Indemnity plans 19 54 79 Prepaid plans 10 41 78