The industry is noted for having frequent turnovers; since the dawn of the AV industry in the early s, hundreds of AV idols have debuted every year, with an average career span of about a year, appearing in five or ten videos during that time. The line between "adult" and "family" entertainment in Japan is not as clear-cut as it is in some other countries. A celebrity may appear in AVs after already having established a career in mainstream television. Also, it is not rare for a popular AV actress to go on to mainstream celebrity. In , it was reported that over 11 AVs were being made every day by over 70 production companies in Tokyo alone.