Yup. Just looking at the UK, only about 18% ..... ish of ZT-T 260s 'lost to time', ignoring the known factory scraps ?
The unknown/dubious-data factors (imports, exports etc.), mean that you will never get accuracy. Those cars, few though they may be, will still represent a significant percentage of the number of cars involved, and distort your 'result' massively, therefore.
And that's only the UK, and next year the numbers may be different.
All a bit academic, I guess. .
David