Middle children are going extinct, according to new data and it's because no one wants to have three or more kids anymore.

Back in the late 1970s, 59% of mothers had three or more kids. Today that's down to 32% and dropping. The majority of people said three or four kids was ideal back in the '70s. Today, the top answer is two children.

So what's the reason? It sure looks like it's a financial thing. In 1960, it cost $198,000 to raise a child until age 18. In 2013, it was up to $245,000.

A study found that there's a direct connection now between having more money and having more kids. In other words, the main thing standing in the way of people having big families is that they feel like they can't afford to.

Read more at USA Today.

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