I just stumbled across this breakdown of TV production for 1946-1951
1946 - 10,000
1947 - 250,000
1948 - 1,000,000
1949 - 3,000,000
1950 - 7,500,000
1951 - 5,600,000
That '46 figure seems a little low to me ?
They give further breakdown by screensize and other features for 1951.
It's on page 61
http://www.americanradiohistory.com/...ng-1952-01.pdf