Passage: In September and October 2013, Barry performed his first solo tour "in honour of his brothers and a lifetime of music". In addition to the Rhino collection, The Studio Albums: 1967–1968, Warner Bros. released a box set in 2014 called The Warner Bros Years: 1987–1991 that included the studio albums E.S.P., One and High Civilization as well as extended mixes and B-sides. It also included the band's entire 1989 concert in Melbourne, Australia, available only on video as All for One prior to this release. The documentary The Joy of the Bee Gees was aired on BBC Four on 19 December 2014.In 2015, 13STAR Records released a box set 1974–1979 by 23 March, which included the studio albums Mr. Natural, Main Course, Children of the World and Spirits Having Flown. A fifth disc called The Miami Years includes all the tracks from Saturday Night Fever as well as B-sides. No unreleased tracks from the era were included.After a hiatus from performing, Barry Gibb returned to solo and guest singing performances. He occasionally appears with his son, Steve Gibb, who declined to use the Bee Gees brand mainly because of his much different style. In 2016, he released In the Now, his first solo effort since 1984's Now Voyager. It was the first release of new Bee Gees-related music since the posthumous release of Robin Gibb's 50 St. Catherine's Drive. Also in 2016, Capitol Records signed a new distribution deal with Barry and the estates of his brothers for the Bee Gees catalog, bringing their music back to Universal.

Question: What year did Barry perform the first solo tour?
2013