I found this table on a web page about boxers. It has all the weights for puppies (in Kilos not in Pounds, but there's a lot of web pages where you can translate from Kg to Pounds online). Â I hope It's useful for you. Anyway, in my opinion, this puppies are very big, comparing to what I've heared around, so it's just as a reference.
AGE (in days) Â WEIGHT female-male
 born day     400-500g
 10         900g-1,2 Kg.
 20         1,7-2,1 Kg.
 30         2,8-3,1 Kg.
 40         3.9-4,2 Kg.
 50         4,8-5,3 Kg.
 60         5,9-6,5 Kg.
 70         6,8-7,4 Kg.
 80         8-8,6 Kg.
 90         9,1-9,8 Kg.
100 Â Â Â Â Â Â Â Â 10-10,7 Kg.
110 Â Â Â Â Â Â Â 11,3-12 Kg.
120 Â Â Â Â Â Â Â 12.2-12.7 Kg.
130 Â Â Â Â Â Â Â 13-13,8 Kg.
140 Â Â Â Â Â Â Â 14-15kg.
150 Â Â Â Â Â Â Â 14,8-16kg.
160 Â Â Â Â Â Â Â 16,3-17,2 Kg.
170 Â Â Â Â Â Â Â Â 17,5-18,5 Kg.
180 Â Â Â Â Â Â Â Â 19,8-22 Kg.