Following a link in that link, I found these tidbits. The article does not give specifics on models, just the overall production at the plant. Maybe the VW History site might be where to look for specific models.
Volkswagen Westmoreland Assembly was a manufacturing complex located 35 miles (56 km) southeast of Pittsburgh in Westmoreland County, Pennsylvania, near New Stanton, and noted for manufacturing 1.15 million Volkswagens from 1978 until 1987.[1]
1981: (March 31) VWoA Westmoreland manufactures 500,000th car
1985: (November 15) VWoA Westmoreland manufactures its millionth vehicle.
1988: (July 14), Volkswagen closes Westmoreland Assembly.