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In March 1999, the civilian noninstitutional population of the United States totaled approximately 272 million—139 million were female and 133 million were male. At the younger ages (under 20 years), the male-female ratio was 105 to 100, but for the ages of 20 to 44, it was 98 to 100. This ratio continues to decline with age, reaching 49 men to 100 women at the ages of 85 and over. Women had a higher median age than men, 35.8 years compared with 33.8 years.
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