In practice, the program has been used very little since the mid-1990s.

They have been used since the beginning of the 20th century.

To my knowledge they hadn't been used since the war.

The current system has been used since the 2007 season.

The word had been used in English since the mid-19th century.

It has been used as such since the late 1950s.

The site was used at various times since the early 1940s.

The company has used its current legal name since 1958.

A popular technology known as X10 has been used since the 1970s.

The word had been used in this sense at least since the late 18th and early 19th century.