Manga debuted in 1997 & was 60% finished in 2012

The second issue of the "Dai One Piece Shimbun" promotional publication printed an interview with One Piece creator Eiichiro Oda on Wednesday. In the interview, Oda states that he has finished around 65% of the manga. He adds that he cannot do any more long stories besides One Piece .

Oda previously mentioned in a previous issue of the One Piece Shimbun in 2012 that he had finished around 60% of the story.