Sony sold 12m floppy discs in 2009, down from 47m in 2002

"The 3.5-inch floppy was a ubiquitous and necessary component for storing and transferring files between personal computers for nearly three decades. Sony pioneered the 3.5-inch floppy disk in 1981, eventually replacing the 5.25-inch floppy disk that had previously been the popular storage format.
However, as the size of files and programs grew, the floppy disk was pushed aside by inexpensive and larger-format storage medium. Thanks to the creation of storage methods such as CDs, DVDs, Zip, and USB drives, Sony saw its Japanese sales of floppies decline from a record 47 million disks in fiscal 2002 to 12 million in fiscal 2009."
Source: Mainichi Daily Newspaper, reported in CNET, 25th April 2010