That share slipped to 20 percent by the late 90's, the commission says.
But the newspapers' share slipped from 26.8 percent the year before.
The company's shares have slipped 3.3 percent so far this year.
The shares opened at $63.62 and slipped to $61 within the first hour.
The shares then slipped even further to close on Friday at $7.69.
That share has since slipped to slightly more than 60 percent and may continue to decline.
By the close of trading today, the shares had slipped to £2.25.
Since then, however, their predicted share has slipped back to around 13-15 per cent.
The shares slipped 13p to 745p, 35p below their all-time high.
The shares, floated at 65p a week ago, slipped 15p to 179p.