To add to this: I wonder if it would be possible to get, from Mercedes, the number of Pagodas sold in each country around the world. Then, knowing the number now present in Germany, you could presume similar proportions in other countries. For example, if there were 16000 originally sold in Germany, and there are now around 4000 there, you could say that the same proportion (25%) remains worldwide of the original total, which I think was around 50000. While this would be somewhat off due to cars crossing the Atlantic, it might not be a bad estimate. I think in the 1980s, they were crossing in the other direction (mine is one of those).