The phrase "fluctuate for" is a correct and usable part of a sentence in written English.
It is typically used to indicate the variation or change in something over a specific period of time. Example: The stock market has been fluctuating for the past week due to the global economic crisis.
"Oil prices will fluctuate for a while," he told me.
California never properly liberalised its market while wholesale prices were allowed to fluctuate, for instance, retail prices were capped.
Economists tend to look at job growth as the primary sign of an economy's health and focus on private-sector employment because government jobs fluctuate for noneconomic reasons.
Numbers fluctuate for many reasons, including changes in government policy, booms and busts in Britain's economy, and conditions in the places that immigrants come from.
"For this reason, we anticipate that numbers will fluctuate for the next several weeks, should the detainees choose to end their hunger strike," Colonel House said Friday.
The Dow Jones industrial average also returned to levels not seen in more than five weeks, despite trading that caused the major indexes to fluctuate for much of the day.
The idea of America fluctuated for them between seeming like a land of bounty and a harsh, foreign place.
Stocks fluctuated for much of the day, but by afternoon, gains in the financial and industrial sectors helped to offset losses in utilities.
After fluctuating for the first hour or so of trading Friday, stocks rose as investors concluded that the September jobs report would prompt the Federal Reserve to take action.
Inequality of that sort fluctuated for 130 years to 1950, before falling sharply in 1950-1980, in what the report calls an egalitarian revolution.
They noted that income fluctuated for idiosyncratic reasons from year to year -- an employee could lose a job, for example -- so estimates that depended on a single year were based on "noisy" data.
