context: In Australia, the show has had a strong fan base since its inception, having been exclusively first run by the Australian Broadcasting Corporation (ABC) since January 1965. The ABC has periodically repeated episodes; of note were the weekly screenings of all available classic episodes starting in 2003, for the show's 40th anniversary, and the weekdaily screenings of all available revived episodes in 2013 for the show's 50th anniversary. The ABC broadcasts the modern series first run on ABC1, with repeats on ABC2. The ABC also provided partial funding for the 20th anniversary special The Five Doctors in 1983. Repeats of both the classic and modern series have also been shown on subscription television channels BBC UKTV, SF and later on SyFy upon SF's closure.[citation needed]
question: How many years had the show been around in 2013?