source:
http://forums.gaming-age.com/showthread.php?s=&threadid=76242
They shipped 4 million units in 2003!
2002/12/31
95.22 million units (Japan: 19.85million/ USA: 37.27 million/ Europe: 38.10 million)
2003/03/31
96.41 million units (Japan: 20.09million/ USA: 37.54 million/ Europe: 38.78 million)
2003/06/30
97.24 million units (Japan: 20.19million/ USA: 37.91 million/ Europe: 39.14 million)
2003/09/30
98.20 million units (Japan: 20.32million/ USA: 38.58 million/ Europe: 39.30 million)
2003/12/31
99.22 million units (Japan: 20.51million/ USA: 39.18 million/ Europe: 39.53 million)
Other numbers:
Sony shipped ~20 million PS2's in 2003
2002/12/31
49.59 million units (Japan: 12.47 million/ USA: 21.20 million/ Europe: 15.92 million)
2003/01/15
50.03 million units (Japan: 12.53 million/ USA: 21.48 million/ Europe: 16.02 million)
2003/03/31
51.20 million units (Japan: 12.70 million/ USA: 22.21 million/ Europe: 16.29 million)
2003/06/30
53.85 million units (Japan: 13.60 million*/ USA: 23.65 million/ Europe: 16.60 million)
2003/09/06
60.03 million units (Japan: 14.17 million*/ USA: 26.42 million/ Europe: 19.44 million)
2003/09/30
62.63 million units (Japan: 14.26 million*/ USA: 27.42 million/ Europe: 20.95 million)
2003/12/31
69.46 million units (Japan: 15.90 million*/ USA: 29.09 million/ Europe: 24.47 million)
2004/01/13
70.00 million units (Japan: 16.18 million*/ USA: 29.26 million/ Europe: 24.56 million)
In less than 3 years the PS2 software has shipped 56% of what the PSOne has taken in 8+ years.
Cumulative Production Shipments of Software Titles
(as of December 31, 2003)
PlayStation®
Japan - Approximately 285 million units
North America - Approximately 366 million units
Europe - Approximately 294 million units
Worldwide - Approximately 945 million units
PlayStation®2
Japan - Approximately 114 million units
North America - Approximately 248 million units
Europe - Approximately 167 million units
Worldwide - Approximately 529 million units