Hard drive capacity evolution

1983: 10 MegaByte 3.5" hard drive for personal computers.
1995: 1 GigaByte hard drive. (100 times 1983 capacity)
2005: 500 GigaByte hard drive. (500 times 1995 capacity)
2007: 1 TeraByte hard drive. (1000 times 1995 capacity)
2015: 250 TeraByte? (500 times 2005 capacity?)

250TB = 55 trillion pages of text = 54,500 uncompressed movies = 23,000 HD movies