United States according to Nielsen Soundscan. They have had more number-one albums on the UK charts, fifteen, and sold more singles in the UK, 21.9 million, than any other act. In 2004, Rolling Stone ranked the Beatles as the most significant and influential rock music artists of the last 50 years. They ranked number one on Billboard magazine's list of the all-time most successful Hot 100 artists, released in 2008 to celebrate the US singles chart's 50th anniversary. , they hold the record for most number-one hits on the Billboard Hot 100, with twenty. The Recording Industry Association of America certifies that the Beatles have sold 183 million units in the US, more than any other artist. They were collectively included in Time magazine's compilation of the 20th century's 100 most influential people. In 2014, they received the Grammy Lifetime Achievement Award. On 16 January each year, beginning in 2001, people celebrate World Beatles Day under UNESCO. This date has direct relation to the opening of the Cavern Club in 1957. In 2007, the Beatles became the first band to feature on a series of UK postage stamps issued by the Royal Mail. Earlier in 1999, the United States Postal Service issued a stamp dedicated to the Beatles and Yellow Submarine. Personnel Principal members John Lennon – vocals, guitars, keyboards, harmonica, bass (1960–1969; died 1980) Paul McCartney – vocals, bass, guitars, keyboards, drums (1960–1970) George Harrison – guitars, vocals, sitar, keyboards, bass (1960–1970; died 2001) Ringo Starr – drums, percussion, vocals (1962–1970) Early members Pete Best – drums, vocals (1960–1962) Stuart Sutcliffe – bass, vocals (1960–1961; died 1962) Chas Newby – bass (1960–1961) Norman Chapman – drums (1960; died 1995) Tommy Moore – drums (1960; died 1981) Touring musician Jimmie Nicol – drums (1964) Timeline Discography The Beatles have a core catalogue consisting of 13 studio albums and one compilation. Please Please Me (1963) With the Beatles (1963) A Hard Day's Night (1964) Beatles for Sale (1964) Help! (1965) Rubber Soul (1965) Revolver (1966) Sgt. Pepper's Lonely Hearts Club Band (1967) Magical Mystery Tour (1967) The Beatles (1968) ("The White Album") Yellow Submarine (1969) Abbey Road (1969) Let It Be (1970) Past Masters (1988, compilation) Song catalogue Through 1969, the Beatles' catalogue was published almost exclusively by Northern Songs Ltd, a company formed in February 1963 by music publisher Dick James specifically for Lennon and McCartney, though it later acquired