The past few decades have proved difficult for traditional Bedouin culture.

The last few decades have proved an exception, however.

The past two decades has proven the success of the program.

This decade also proved to show a negative side in the team's history.

In 1980 it was marketed as "Your system for the 80s", and indeed that decade proved to be its heyday.

The first decade of the 21st Century has already proved to be a dangerous and unstable time around the world.

It also won't save it from destruction and the past six decades proves.

The second decade of the 20th century proved to be formative years for young Dange.

The first decade of the 2000s proved the most productive of her career.

But several decades of experience have proved beyond reasonable doubt that a purely punitive approach can, at best, hold the line.