At the beginning of 2012, researcher IDC estimated fewer than 200 million tablets would be sold by 2016. They recently ramped up the forecast to 282 million that year. That is, IDC became 40% more bullish on tablets in just a year.

It took 19 years from the sale of the first IBM PC to hit 100 million PCs sold. The Apple (AAPL 0.64%) iPad was launched in 2010, and tablets will hit 100 million in sales this year.

That's some fantastic growth. Senior technology analyst Eric Bleeker explains in the video below how unique tablet market dynamics have created a situation where Apple appears poised to keep its 50%-plus market share in 2013.