Historical figures show the following residence numbers at the Home in the given years:
(these figures provided by Vigo County Group Homes - may not be 100% accurate)

.
May 1910 -----174
Jan. 1920 -----117
May 1928 -----134
April 1930 -----144
Dec. 1930 -----110
Fall 1938 ------104
May 1939 ----- 65
1939 - 40 black children
           and 66 white
Census Information Of Glenn Home ~ 1910, 1920, 1930
April 1940 ----- 60
Nov. 1941------ 60
April 1946 ----- 75
April 1947 -----105
Dec. 1947 -----101
(gap in information- apologies)
Jan. 1972 ------ 83
Jan. 1974 ------ 80
Dec. 1977 ------ 69
The 1910 and 1920 census' are in 'PDF' format.  These are the original handwritten entries.  You can enlarge the image to view better by using the 'zoom' tool which looks like a hand. 

Files in microsoft excel format which can be sorted by any data column to be added very soon.

These records acquired from Ancestry.com