So he decided to put air-conditioning into ie chicken house

So he decided to put air-conditioning into ie chicken house so that the he
I have a sentence is:
So he decided to put air-conditioning into his chicken house so that the hens would lay well all through the year and he could have more eggs and in that way get more money.
OK,now,
first,……waiting^^^
then,youwill answer my problem:What does all through the yearmean?
please,please,please,answer,answer,answer.
you 和 will分开，我刚刚没有分开

全年,一年到头

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