The most recent significant revision to Social Security came in 1983.

The present social care system is clearly unsustainable and in need of significant revision.

The only significant revision came in the Casey decision (1992), which made viability even more important.

The new one is the most significant revision since the 12th edition in 1969.

The bill has gone through significant revisions since it was introduced in February.

Japan's growth data is often subject to significant revisions.

Also, new data still often lead to significant revisions.

The panel called for a significant revision in standards of estimation.

The most important update has been the inclusion of the 3rd edition's significant revisions to the game system.

The most significant revision to the manual was made for the 12th edition, published in 1969.