Company officials said they expect the share for July to reach above 24 percent.
The shares reached a 52-week high of $52.125 on March 3.
But the shares reached 86p before closing at 81p, up 5p on the day.
The shares had reached 119, having doubled in about six months.
For a time, their share of the population even reached 10%.
He said the shares could reach $25 within a year.
At times in the 19th century, their share of the population reached 10%.
Earlier, the shares reached $58.50, giving the company a market value of $1.63 billion.
In the fourth quarter of 1995, the foreign share reached 29.6 percent.
He expects the shares to reach $87.50 over the next year.