Hello, my name is Greg.
Unfortunately there is not a database available anywhere publicly that stores statistics for that time period. In these days of more electronic tracking you might be able to get a better estimate but for period of time 50+ years ago you will not be able to find any real statistics that would be reliable and valid.
This is the reason that no one has answered your question to this point. I am sorry to have to give a"bad news" answer but unfortunately you will not be able to get the numbers you desire (with a resource for verification).
If you have a teacher that is requiring this number, you might ask them where a resource might be located for you to seek - as there is not public resource that I am aware of that would have this data from 50+ years ago.
Have a wonderful rest of the week - I am SO SORRY that this numbers is not available.