NOTE - this was a redirect, but it's not appropriate to redirect from quadruplet etc to twin. We need an article on multiple birth here
... is 2.77. In the village the population is spread out with 17.4% under the age of 18, 3.5% from 18 to 24, 22.3% from 25 to 44, 28.7% from 45 to 64, and 28.1% who are 65 ...