Product Quality Review

First time I am writing here in need of urgent to answer this question.
My question is while submitting my PQR to my Department Head covering total 4 years data in PQR. This is because of less no. of batch MFG in each year. Total 7 batches were mfg. in these 4 years. But he rejected to accept my PQR. My question is how many years can be included as a review period of a PQR if the no. of batches mfg. in each year is not more than 2.