Charts from International Federation of the Phonographic Industry (IFPI):

Global Music Sales (Pirated vs. Legitimate)
Current IFPI priorities
Global Growth in Optical Disc Piracy
Countries where overcapacity is thought to be driving very high levels of pirate production

Charts from Recording Industry Association of America (RIAA):

1999 Mid-year Anti-Piracy Statistics
1998 Year-end Anti-Piracy Statistics
1997 Year-end Anti-Piracy Statistics
1997 Mid-year Anti-Piracy Statistics
1996 Year-end Anti-Piracy Statistics
1996 Mid-year Anti-Piracy Statistics
1995 Year-end Anti-Piracy Statistics