Since mid-2009, however, prices have rebounded about 60 percent, he said.
According to the data, reserves of coal declined over time and then rebounded about a decade ago at a level sufficient to meet world demand for the next 100 years.
The stock, which plummeted from $300 to well under $100 last summer and fall, has rebounded about 30 percent in the last few weeks.
Netflix stock, which plummeted from $300 to well under $100 last summer and fall, has rebounded about 30 percent in the last few weeks, to $93.65 in early trading on Wednesday.
Prices eased on Tuesday by nearly 2 percent as negotiations for a cease-fire appeared to gain traction, but then rebounded about 1 percent after a bus bombing in Tel Aviv on Wednesday slowed progress.
American Express, up 2 13/32, to 88 13/32, was the biggest factor in the blue-chip index, which has rebounded about 1,050 points, or 14percentt, from its low at the end of August.
Indeed, the fading of technology stocks this spring and the revival, at least temporarily, of the consumer and financial sectors he favors have helped Berkshire Class A shares rebound about 30percentt from a low of $40,800 in March.
The stock has rebounded about $2 from its after-hours low point but is still down $15 to $286, or 5%, from Wednesday's close of $301.
Stockpiles were predicted to fall this year to 312 million bushels, from 456 million bushels, before rebounding to about 700 million bushels by the end of the decade.
Boston, which recorded a slight loss in the year ending July 2006, rebounded with about 4,000 more people in the next year.
