Bitcoin continues to rise in value

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(CNN) -- Bitcoin is continuing to rise in value.

Source: MGN Online

The digital currency just hit the $14,000 mark for the first time in Asia Thursday.

Back in 2011, it was worth less than a dollar.

And it started this year below $1,000.

But by last week, it shot above $10,000.

Now Bitcoin is attracting the attention of economists.

Some describe the rapidly growing currency as unstable--but others say it's only up from here.