The number of live multiple births has increased 24 percent since 1985.
And the number of births is expected to continue to increase for a few more years.
It is expressed as the number of births per 1,000 population.
The company estimates the number of such births at 62.
The number of first births for women 35 and older has increased nearly eight times since 1970.
Between 2001 and 2010, the number of births to women aged 40 or over rose by 71%.
By 2007, the number of births will again exceed 4 million for the first time since 1964 and continue to increase during the 21st century.
By 1986, however, the number of live births had declined to 806,041.
The number of multiple births has increased over the last decade.
The number of births alone, he said, increased by 28 percent between 1980 and 1989.
