I think that mike d might have been refering to this article on dci's website...
Showcasing the best of the best:
* Each year, more than 8,000 students audition for the fewer than 3,500 positions available in top-tier DCI member corps
* More than 5,000 members directly participate annually
* 66 percent are male
* Average age is 19.4
* 72 percent are full-time college students
* 59.6 percent of the current college students are pursuing music education degrees, while 65 percent of those that indicated they are high school students intend to major in music education
It must have been misraed... the link is here... http://www.dci.org/about/