35 million

The estimated number of mothers between the ages of 15 and 44 in 2000.

81 percent

The percentage of women ages 40-44 in 2000 who were mothers. In 1980, 90 percent of women in that age group were mothers.

1.9

The average number of children born to women who were age 40-44 in 2000. In 1980, the number was 3.

11 percent

The percentage of women in 2000 who ended their childbearing years with four or more children, compared with 36 percent of women in 1976.

26,000

The number of births nationwide in 1999 attended by physicians, midwives or others that did not occur in hospitals. That was down from 35,000 in 1990.

1 in 35

The odds of a woman delivering twins in 1999. Her odds of having triplets or other multiple births was 1 in 541.

55 percent

The percentage of the 3.9 million women with infants under the age of 1 in 2000 who were in the labor force. This rate was down from the record high of 59 percent in 1998. However, it was still much higher than the 39 percent that was first recorded by the Census Bureau in 1976.

10 million

The number of single mothers living with children under 18 in the United States in 2000, up from 3 million in 1970.

933,000

The number of teen mothers ages 15-19 in 2000. They comprised 10 percent of all women in this age bracket.

Source: U.S. Census Bureau