Wool production increased from 518,000 to 819,000 tonnes in the same period.
Corn production fell from 2.4 million to 1.4 million tonnes between 1998 and 2001 as a result.
These fast wheeled vehicles usually weighed from 3 to 10 tonnes.
During 1938-42 aluminum production increased from 5,000 to 30,000 tonnes.
The group also hopes to increase production from 80 million tonnes in 2006 to 103-million-tonne by the end of 2007.
Guests saw how the plant has been upgraded over recent years and capacity increased from 45,000 to 70,000 tonnes.
The structure took 5 years to design and is built from approximately 2 tonnes of gold.
Between 1995 and 2001 they are due to be reduced from 1.1 million to 0.8 million tonnes.
Supply in Europe therefore increased from 16 million to 17.2 million tonnes between 1996 and 1998, which is an increase of 9 %.
The towing capacity has dropped from 3.5 to 2.5 tonnes.