According to this site:
The Use Of The Mosin Nagant In Estonia
P-14 numbers in Estonia ran to:
1926: 29,115
1939: 41,050
It doesn't clarify whether those numbers represent stock on hand or shipments.
At least one of the Baltic states rebuilt some P-14s in 7.62 x 54R, using magazines from scrapped Mosin Nagants. Anyone have pics and / or numbers?