Puzzle

Here is a list showing the month and a number for each month.

January 7110
February 826
March 5313
April 541
May 3513
June 4610
July 4710
August 681

Decipher the logic and find the number for September = ?

2 answers

99...
still working on the ending digit(s)
9919
9 letters in September
9th month is September
September 'S' is d 19th letter in alphabets