Here's one link to a breakdown of the 2004 production numbers:
http://www.gtoforum.com/f2/total-gto-production-numbers-2004-2006-a-14686/
Black on Black was the most popular combination: 1,669 automatics and 1,711 manual, or 3,380 total black/black out of 15,740 total 2004 production.
Note that I have seen at other sites list total production as 15,728, but they do not have the exterior/interior color breakdown (see http://www.havican.com/GTO/2004GTOProductionFigures.pdf OR http://ultimategto.com/cgi-bin/statsexplorer.cgi?year=2004&f1=popgto).
Anyway, the breakdown numbers above should be pretty darn close.
FAQ's of ls1gto.com will serve you well
Around 15,700 2004 GTOs were produced.
10,532 Pontiac GTOs were made in 1971.
There were 2,170 convertible GTOs in 1970.
There were 384 "Sports Coupe" GTOs.
The number of 2004 Dodge Rumble Bees that were produced was 3,700. The Rumble Bee was only produced in 2004 and 2005 and were only available in yellow or black.
I cannot tell you the number, however, if you contact the factory in Bowling Green Kentucy, they will be able to tell you. I do know that it was a rare color. We were only allowed one in Reno, and I sold it. It was a convertible, with a black top.
1190 were made
Around 1911 were built in black.
http://www.gtoforum.com/f2/total-gto-production-numbers-2004-2006-a-14686/ 700 were made in 2004 and they didnt make any in 2005 or 2006
2,400 per year
None
469 were made in 1983