so you'd have to multiply these numbers by 5,000.

所以要把这些价格乘以5000
This just shows what has been happening

这里显示的就是
to the real price of corn since 1929.

1929年以来玉米实际价格的变动
There's a lot of talk recently; you must have heard it--

最近有很多争论你们应该听说过
about this spike up.

关于玉米价格上扬
In fact, it's quite a hefty spike up;

实际上涨势很强
it's doubled--

价格翻了一番
more than doubled in real terms in just the last couple years.

在过去几年中实际价格上涨了一倍多
Do you know why this is?

你们知道为什么吗
Why is corn getting expensive right now?

为什么玉米现在变贵了
What's that? That's the theory;

什么就是这个原因
I think it's right--

我想是对的