Music popular in the 1980s and 1990s is also used widely.

Industry officials say the practice is no longer widely used.

The term has been widely used since the late 1980s and into the 21st century.

It is the first treatment choice and the most widely used.

It first became available in 1963 and was used widely during the 1960s.

That technology may be widely used in the middle to late 1990's.

This sort of system was widely used in the 1930s and 1940s.

It was very widely used during the 1950s to early 1970s.

It would be widely used well into the 20th century.

This is the system most widely used among such systems available to the developed countries.