. 1984 Fall;6(1):1–29.

Table 22. Number of aged Medicare enrollees served per 1,000 enrolled, by type of coverage: United States, 1977-1984¹.

Type of coverage	Calendar year								Average annual percent change

	1977	1978	1979	1980	1981	1982	1983²	1984 ²	1977-81	1982-84
Hospital insurance and/or supplementary medical insurance	570	594	610	638	655	641	655	660	3.5	1.5
Hospital insurance	231	232	232	240	243	251	255	260	1.3	1.8
Supplementary medical insurance	581	607	624	652	669	654	660	670	3.6	1.2

Data include experience for persons who exceeded the annual Medicare deductibles and for whom reimbursements were made. The SMI annual deductible increased from $60 to $75 on January 1, 1982. For that reason, comparisons of data for periods after 1981 with data for 1981 and earlier may be misleading.

Estimated.

NOTE: Based on a 5-percent sample of enrollees.

SOURCE: Bureau of Data Management and Strategy, Health Care Financing Administration.

Table 22. Number of aged Medicare enrollees served per 1,000 enrolled, by type of coverage: United States, 1977-19841.

Table 22. Number of aged Medicare enrollees served per 1,000 enrolled, by type of coverage: United States, 1977-1984¹.