Steve,
Total production figures are probably true, but for what model year or is that the total production for all the years they were made? Do you know the number shipped to the states? I'm sure it was far, far less.
Also, remember that the US Import laws changed in 1968 and many vehicles did not meet the US smog control requirements and were banned from import to the US. That means that many of the vehicles that were being imported to the US stopped because they did not want to make a separate line of vehicles to meet US smog specifications and could no longer be imported to the USA.
Some vehicle continued to be imported by 3 parties, and became known as the Grey Market, which were vehicles that were imported and sold here only after they were modified and certified to meet US smog specifications. Some vehicles could easily be modified while others required extensive modifications....Those were often more expensive exotic vehicles that could still make a profit even after the expensive modifications.
....Rich