This is actually the lower of several estimates quoted.
One of his publishers (he has several) estimates that the figure is in the millions.
Over all, the floating ice dwindled to an extent unparalleled in a century or more, by several estimates.
The cost of building icebreakers and keeping the older vessels operating until the new ones have been launched could easily top $1.5 billion, according to several estimates.
The average American, by several estimates, generates more than 20 tons of carbon dioxide or related gases a year; the average resident of the planet about 4.5 tons.
But according to several estimates, the Bangladeshi population in Detroit has grown from a few thousand in the mid-1990's to 15,000 to 20,000.
There are 300,000 Brazilians and their descendants living in Paraguay, according to several estimates, out of a population of 6.8 million.
They won more, and the more they won, the more money they received; several estimates placed the budget at more than £5 million, or $7.8 million, annually.
By several estimates, the peer-to-peer rental market, which includes travel-related sites like Airbnb and Vayable, will generate more than $3.5 billion in revenues this year.
But more and more, they give the appearance of private, for-profit militias -- by several estimates, a force of roughly 20,000 on top of an American military presence of 130,000.
He says that doctors have already reacted to the D.E.A. crackdown by changing the way they deal with the many Americans — at least 50 million, by several estimates — who suffer from chronic pain.
