A ship-building program begun fifteen years earlier had made the American Navy one of the strongest in the world.

VOA: special.2010.07.15

German rocket scientists, with the support of the German government, had spent fifteen years developing rockets as weapons.

VOA: special.2009.06.10

The festival was started fifteen years ago in the parking lot of a store that sold alcoholic beverages.

VOA: special.2010.08.02

"My background is a teacher. I taught young adults from, say,age eleven through thirteen for about fifteen years.

VOA: special.2009.10.12

Steve Graham says he has been hearing about the death of handwriting for the past fifteen years.

VOA: special.2009.10.29

"We've only had this technology around for about fifteen years, and most carcinogens will take about several decades, thirty-forty years to develop a cancer.

VOA: special.2011.06.06

On an average day, nearly everyone fifteen years of age and older took part in a non-work activity like watching television, socializing or exercising.

VOA: special.2011.07.22

Somali officials say some fishermen armed themselves and began demanding money from fishing ships near the Somali coast about ten to fifteen years ago.

VOA: special.2009.05.27

So he and a team of researchers spent more than fifteen years traveling across Asia.

VOA: special.2010.05.25

It was the first time he had been there in more than fifteen years.

VOA: special.2009.05.24

The number of visitors has increased by ten times in the past fifteen years.

VOA: special.2009.06.03

The committee noted that the number of days spent by passengers on ships in the area has increased by one hundred fifty percent in the last fifteen years.

VOA: special.2009.12.16

He served as the director of the NAACP for fifteen years.

VOA: special.2010.04.24

For fifteen years, he taught music at Howard University in Washington.

VOA: special.2010.03.07

By that time, Roy Brown had served fifteen years in prison.

VOA: special.2009.10.03

The project took fifteen years and cost forty million dollars.

VOA: special.2010.07.20

Ella's mother died when Ella was fifteen years old.

VOA: special.2010.07.04

It took fifteen years to complete the project.

VOA: special.2009.10.30

They had played together for fifteen years.

VOA: special.2009.04.19

It took place exactly fifteen years ago.

VOA: special.2009.08.25

The earthquake sent large fermenting vats and one hundred gallon casks of rum, some aged fifteen years, crashing to the floor.

VOA: standard.2010.06.01