Their fortunes changed at the end of the decade, when they released "Steel Wheels" (1989), promoted by a large stadium and arena tour, the Steel Wheels/Urban Jungle Tour. Since the 1990s, new material has been less frequent. Despite this, the Rolling Stones continue to be a huge attraction on the live circuit. By 2007, the band had four of the top five highest-grossing concert tours of all time: Voodoo Lounge Tour (1994–1995), Bridges to Babylon Tour (1997–1998), Licks Tour (2002–2003) and A Bigger Bang (2005–2007). Musicologist Robert Palmer attributes the endurance of the Rolling Stones to their being "rooted in traditional verities, in rhythm-and-blues and soul music", while "more ephemeral pop fashions have come and gone". The Rolling Stones were inducted into the Rock and Roll Hall of Fame in 1989 and the UK Music Hall of Fame in 2004. "Rolling Stone" magazine ranked them fourth on the "100 Greatest Artists of All Time" list and their estimated record sales is 240 million. They have released 30 studio albums, 23 live albums and numerous compilations. "Let It Bleed" (1969) marked the first of five consecutive No. 1 studio and live albums in the UK. "Sticky Fingers" (1971) was the first of eight consecutive No. 1 studio albums in the US. Their latest album, "Blue & Lonesome" (2016), became their twelfth UK number-one album. In 2008, the band were listed 10th on the "Billboard" Hot 100 All-Time Top Artists chart, and in 2019 "Billboard" magazine ranked them second in their list of the "Greatest Artists of All Time". In 2012, the band celebrated its 50th anniversary. The group continues to sell out venues, with their recent No Filter Tour running for two years and concluding in August 2019. Keith Richards and Mick Jagger became childhood friends and classmates in 1950 in Dartford, Kent. The Jagger family moved to Wilmington, Kent, away, in 1954. In the mid-1950s, Jagger formed a garage band with his friend Dick Taylor; the group mainly played material by Muddy Waters, Chuck Berry, Little Richard, Howlin' Wolf and Bo Diddley. Jagger met Richards again on 17 October 1961 on platform two of Dartford railway station. The Chuck Berry and Muddy Waters records Jagger was carrying revealed a shared interest.