 From 1990 to 1995 any corporate body has furnished official data or estime of sale of the singers.Reliable sources of estimated sales are most important Italian newspapers and magazines, like "Il Corriere della Sera", "La Repubblica", "Il Giornale", "Il Messaggero", and national radio and TV channels, like Rai, Mediaset, MTV, and Radio Italia.To date, national sources attest 145 Italian music artists have surpassed five million records sold, eleven of which have sold between 50 and 100 million copies and five of which have sold over 100 million records.