A number of PU learning techniques have been proposed since 2002.

Previous projects proposed since the 1970s have included oil development, a nuclear power plant and high-density housing.

Voters have approved 16 of 21 such initiatives proposed since 1968.

It has proposed an alternative budget every year since 1995, with notable decreases in pork spending.

This conversion had been proposed and planned since the 1990s.

Over twenty different classifications that have been proposed since 1900.

An estimated 185 such sanctions have been in force or proposed since 1993.

Merger had been proposed at various times since the 1960s but had gained ground in 1995.

Numerous overhauling plans have been proposed since 1996, yet none was implemented.

It is the first property tax increase he has proposed since 1991.