Table 20. Aged Medicare hospital insurance enrollees: Percent distribution by sex and race, and rate of males per 100 females: All areas, 1966-1983.

Year	Total persons	Male				Female				Number of males per 100 females
		Total	White	All other races	Unknown	Total	White	All other races	Unknown
1966	100.0	42.6	38.6	3.4	0.6	57.4	50.8	4.1	2.5	74
1970	100.0	41.8	37.4	3.5	0.9	58.2	51.9	4.4	1.9	72
1975	100.0	40.8	36.2	3.6	1.0	59.2	52.8	4.7	1.7	69
1977	100.0	40.6	36.0	3.7	1.0	59.4	52.9	4.8	1.7	68
1980	100.0	40.4	35.7	3.7	1.1	59.5	52.9	4.9	1.7	68
1981	100.0	40.4	35.6	3.7	1.1	59.6	52.9	5.0	1.7	68
1982	100.0	40.4	35.6	3.7	1.1	59.6	52.9	5.0	1.7	68
1983	100.0	40.3	35.5	3.7	1.1	59.7	52.9	5.0	1.8	68

NOTE: Detail may not add to total due to rounding.

SOURCE: Bureau of Data Management and Strategy, Health Care Financing Administration and unpublished data.