There are a variety of chart data sources in Japan. Oricon has been the major official provider since the late 1960s, with the RIAJ providing shipping certifications since 1989 (and digital market certifications, backdating to the beginning of the digital market). Alternative charts come from SoundScan (pure sales, since 1995) and Billboard Japan (Japan Hot 100, sales+airplay). The RIAJ formerly listed the top monthly ringtones from 2006–early 2009, and currently lists the top weekly digital songs.