<p>O.K… I am going to apply some chimp math to the numbers in the sdn chart. 
</p>
<p>26,651 total N.
2,665 is 10%.
1,333 is 5%
267 is 1%</p>
<p>So assume without the data to back it up that the score distributions within a “band” are equal (just go with me here, I said it was chimp math ;)), we can “calculate” (and I say that as a History major) that:</p>
<p>260 is top 2%
248 is top 10%</p>
<p>of all students entering the match in 2009.</p>
<p>We can further assume that the percentiles would be better when compared to all test takers.</p>