Within three years revenue had spiked five-fold.
For the states with either a two or three year probationary period, Figure 1 clearly shows a "spike" in classroom expenditures in the year that a teacher is being evaluated for tenure.
Four years ago spikes in the price of food triggered riots in 12 countries, including Egypt, and prompted Russia to ban wheat exports to conserve its own stocks.
"The last three years we've seen a tremendous spike in claims, and in particular the last two," said Todd Davis, who has overseen workers' compensation for the St . LouisRams for the past 15 years.
But allow a couple of main stems to grow for two or three years, so they can produce their short spikes of pale purple flowers.
The spike in deaths, more than three years after the war began, became a major factor in the sweeping Democratic gains in Congress this week.
But three years later, while playing volleyball, he lunged to spike the ball, and felt a pull at his left flank.
That's up from just a few dozen five years ago, a spike that blog watchers say owes much to the events of Sept. 11, which spawned a whole new subgenre: the war blog.
The limit is useful for borrowers facing spikes in interest rates after two or three years.
After the last sharp price spike in 2008, the G-20 promised to invest $22 billion over three years to help vulnerable countries boost food production.
These days there's rarely a shortage of news coming out of Rikers Island: savage fights, spikes in gang violence, an inmate jailed without trial for three years.
