Specific counts by model year (series and model) are found in KFOCI HANDBOOK version 4.0. Month-by-month counts are in version 5.0 which will be released sometime in the future.
The problem with breaking out 1949 and 1950 model year cars is that field stocks of new, untitled, unsold 1949 model year cars were re-tagged as 1950 model year vehicles and so far, no lists of what was re-tagged have surfaced. Volume 4.0 and BUILT TO BETTER THE BEST shows specific counts for those Kaiser and Frazer cars built during the actual 1950 model year (November 4, 1949 through March 15, 1950).