The company's profits have been growing 35 to 40 percent a year.
In the long run, profits grow at the same rate as the economy.
The multiple will be higher if the profits are growing.
The group's revenue and profits are growing at 20 to 40 percent a year, he said.
Over five years, from 2007 to 2012, their profits grew 17%.
They also said that both revenue and profit should grow about 20 percent next year.
The company went public in 1965 and quickly became a hot stock as reported profits grew rapidly.
But abroad, profits have recently grown by an average of 28 percent a year.
Profits have grown while the industry has contracted, and 2004 looks to be its best year yet.
However they broke even, and in subsequent years their profits grew.