MG42 units produced by each Manufacturer - help please!

Good evening everyone,

I researched about the MG42 units produced by each manufacturer during wartime, but couldnt find a significant thing...
Does somebody of you can help me to replace the questionmarks by the numbers?
This would be amazing!

- Johannes Grossfuss, AG Döbeln (only supplier?)
code: bpr
units produced: ?

- Maget Berlin
code: cra, swd (1945)
units produced: ?

- Mauser Werke Borsigwalde (Rheinmetall)
codes: S/243, ar
units produced: ?

- Berliner-Suhler Waffen-und Fahrzeugwerke/
since 1939 Gustloff-Werke,Suhl
codes: bsw, dfb, 936, bcd, svq(1945)
units produced: ?

- Waffenfabrik Steyr
code: bnz
units produced: ?

Total production during the war amounted to 423,600 units (404,500 estimated 1942 - 1945 from Folke Myrvang's calculations)

Many thanks and best regards
Sir T. Woolridge