WASHINGTON (AP) - The expansion of the U.S. economy will hit its six-year mark in June. Though growth overall has generally been mild, this recovery has proved to be one of the most durable and steady periods of growth since World War II.

WASHINGTON (AP) The expansion of the U.S. economy will hit its six-year mark in June. Though growth overall has generally been mild, this recovery has proved to be one of the most durable and steady periods of growth since World War II.

At 69 months (assuming it endures through March) and counting, this recovery is the fifth-longest since World War II and sixth-longest since record-keeping began in the 1850s.

The longest recovery on record was the 10-year period that lasted from March 1991 until March 2001, according to the National Bureau of Economic Research, which officially determines the beginnings and ends of recoveries and recessions.

Below are the U.S. economy's previous cycles of expansion in the post-World War II era:

DATESDURATION (in months)March 1991-March 2001120February 1961-December 1969106November 1982-July 199092November 2001-December 200773June 2009 -present69 (assuming growth through March 2015)March 1975-January 198058October 1949-July 195345May 1954-August 195739October 1945-November 194837November 1970-November 197336