It's always been true up until the past decade or so.

However, this has not been the case at least until the past decade or so.

It wasn't until decades later that the truth was made known.

Until recent decades, there was little serious research on health problems of old age, when heart disease is most likely to strike women.

The city did not expand very fast, however, until the last two decades of the 19th century.

Until recent decades, however, this distinction didn't matter much to society.

Such laws were rarely used until recent decades, particularly the 1980's.

The Mexican government continued to have very little control over this region until the early decades of the 20th century.

A national convention idea had been brought up but nothing occurred until the next decade.

No one came home in a pine box, so the real effects of the war wouldn't take hold until the next decade.