Apple's quarterly iPhone shipments

Q307: 270,000 (original iPhone released)
Q407: 1,119,000
Q108: 2,315,000
Q208: 1,703,000
Q308: 717,000
Q408: 6,892,000 (iPhone 3G released)
Q109: 4,363,000
Q209: 3,793,000
Q309: 5,200,000
Q409: 7,400,000 (iPhone 3GS released)