Ticket prices climb each year and the real result at the end of the 12 months needs to be adjusted for inflation.
But an internal study in 2002 by the Treasury Department, looking much further ahead, concluded that the gap was actually $44 trillion -- and would climb each year that nothing was done.
The city's poverty rate has climbed each year since 1999, and one in five residents now lives in poverty, according to a recent report by the Community Service Society, another Neediest Cases beneficiary agency.
Said U.S. Interior Secretary Gale Norton in a statement: "With our reliance on imports of foreign oil climbing each year, we would be irresponsible if we didn't consider how we might develop these abundant domestic resources".
About 8,000 to 13,000 people attempt the climb each year, about 90% via routes from Camp Muir on the southeast flank.
About 10,000 people attempt to climb Mount Hood each year.
The proposed increases would raise household bills by about £7 in 2013, climbing steadily each year to reach £15 in 2021.
Mount Ontake is an object of worship for pilgrims who climb it each year.
Ontake, Honshu, Japan 10,049 3,063 1979 Second only to Mount Fuji in elevation and popular esteem, Ontake is an object of worship for pilgrims who climb it each year.
According to figures from the country's tourism ministry, annual arrivals, which plunged from 1.4 million in 1974 to less than 200,000 in 1992, climbed steadily each year until they were back at pre-civil-war rates in 2004.
The inflation rate climbed higher each year he was in office, rising from 6 percent in 1976 to more than 12 percent by 1980; unemployment remained high at 7.5 percent; and volatile interest rates reached a high of 20 percent or more twice during 1980.
