1967 production numbers

[396guy]

Was reading some info at http://camaros.org/geninfo.shtml#HowMany concerning production numbers for 1967 model year.  Page says 220,906 Camaros produced in 1967 but when one looks at the VIN chart, LA shows 65,008 and Norwood 154,698 as last reported sequence numbers.  These add up to only 219,706 - 1,200 units short of the reported total.  I realize the ending sequence numbers for a given plant and month are not 100% accurate but shouldn't the last reported sequence numbers (when totaled) come closer to the total produced?

The 220,906 figure is also reported in Tailfins & Bowties and that includes all marked for export and for Canada ... so what happened to the other 1200 units?   

[Mark]

Export cars sent to Belgium for assembly there.

[396guy]

Tailfins & Bowties shows 4,991 (3,480 V8 models and 1,511 L6 models) for export (no country mentioned) - a few more than the 1,200 in question.  If, in reality, only 1,200 of the 4,991 were exported to Belgium for assembly there, that would leave 3,791 that are listed as export really weren't or were assembled at one or both of the U.S. plants (and their VINs counted) before being exported.  That sound feasible?