Five in recorded history? I am talking at least 8.0 or greater.

June 23, 2001: Southern Peru Earthquake. 8.4 Mw
September 25, 2003: Hokkaido, Japan Earthquake. 8.3 mw
December 26, 2004: Sumatra Earthquake. 9.1 Mw (2004 tsunami)
March 28, 2005: Sumatra, Indonesia Earthquake. 8.6 mw
November 15, 2006: Kuril Islands, Russia Earthquake: 9.3 Mw
January 13, 2007: Kuril Islands, Russia Earthquake: 8.1 Mw
April 1, 2007: Solomon Islands Earthquake: 8.1 Mw
September 12, 2007: Sumatria, Indonesia Earthquake: 8.5 Mw
September 29, 2009: Samoa Earthquake: 8.1 Mw
February 27, 2010: Chile Earthquake: 8.8 Mw