How much Information 2003

Table 1.2: Worldwide production of original information, if stored digitally, in terabytes circa 2002. Upper estimates assume information is digitally scanned, lower estimates assume digital content has been compressed.

Storage Medium

2002 Terabytes Upper Estimate

2002 Terabytes Lower Estimate

1999-2000 Upper Estimate

1999-2000 Lower Estimate

% Change Upper Estimates

Paper

1,634

327

1,200

240

36%

Film

420,254

76,69

431,690

58,209

-3%

Magnetic

4,999,230

3,416,230

2,779,760

2,073,760

80%

Optical

103

51

81

29

28%

TOTAL:

5,421,221

3,416,281

3,212,731

2,132,238

69%