Question: In what year did Tim Gaines leave the band whose eleventh release was "The Roxx Regime Demos"?
Related documents: [0]  [DOC] The Roxx Regime Demos is the eleventh release and third compilation album by Stryper consisting of songs originally released under the band's previous name, Roxx Regime, except for the track "Honestly", which is taken from a later demo. While the album's general release was on July 10, 2007, pre-sale purchases at Stryper.com shipped on July 7, 2007, a reference to 777, a holy number in Christianity and one that used to appear onstage at Stryper concerts. [END] 
[1]  [DOC] Stryper is an American Christian metal band from Orange County, California. The group's lineup consists of Michael Sweet (lead vocals, guitar), Oz Fox (guitar), Tim Gaines (bass guitar), and Robert Sweet (drums). In 2004, Gaines left the band and was replaced by Tracy Ferrie (bass guitar) but rejoined in 2009, only to be fired after tension between the band, Gaines and his new wife. [END] 
Answer: 
2004
2004