The James Bond film series is a British series of spy films based on the fictional character of MI6 James Bond, '007', who originally appeared in a series of books by Ian Fleming. It is one of the longest continually-running film series in history, having been in on-going production from 1962 to the present (with a six-year hiatus between 1989 and 1995). In that time Eon Productions has produced 23 films, usually produced at Pinewood Studios. The series has grossed just over US $6 billion to date, making it the second-highest-grossing film series (behind Harry Potter), and the single most successful adjusted for inflation. Six actors have portrayed 007 in the Eon series. Albert R. Broccoli and Harry Saltzman co-produced most of the Eon films until 1975, when Broccoli became the sole producer. The single exception during this period was Thunderball, where Broccoli and Saltzman became executive producers while Kevin McClory produced.