The money spigots for U.S. startups opened last year to their widest since the peak of the dot-com boom in 2000.

Venture capitalists pumped $48.3 billion into U.S. startups in 2014, according to data today from the National Venture Capital Association and PricewaterhouseCoopers, the most since investors piled $105 billion into closely held companies in 2000. The 2014 total was up 61 percent from $30 billion in 2013 and was more than double the $20.4 billion invested in 2009.

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