These revisions have also come under extensive critical scrutiny.

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

The most recent revision comes April 1, 2001.

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

The latest revision came into force in August 2011.

The revision came just three hours before the midnight deadline to adopt the county's budget for 2006.

Unfortunately, those revisions, while welcome, come as no surprise because they are long overdue.

The revision of 2002 earnings came just 10 days after the higher number was reaffirmed.

The next major revision came in 1934, for which the explicit descriptions of violence were muted.

Later revisions came in 1966, 1975, 1987, 1989, 1990, 1994, 2001, 2005 and 2007.