Attached are the production numbers for the 190D-2.2, 190D-2.5 & 2.5T, and 300DT & TDT.
Note that the numbers indicate total production, so they may not be representative of how many were delivered to North America.
If you're curious about this kind of stuff, consider getting a copy of this book to look through. It has all sorts of specifications for every single model of Mercedes - weight/dimensions, engine info, performance, fuel economy, prices, transmission gear ratios, etc. It's about 300 pages, with at least 1 car per page.
Enjoy!