Paul Erdos, the legendary genuius, was the first to provide an 'elementary' proof of the prime number theorem. Should this be added?
... age of 18, 7.4% from 18 to 24, 32.6% from 25 to 44, 23.2% from 45 to 64, and 12.2% who are 65 years of age or older. The median age is 37 years. For every 100 females ...