Date formats

Hi All,

I am loading data from Flatfile to SQL table. In one of the date column, Date is coming in DD/MM/YYYY, D/M/YYYY,DD/M/YYYY,D/MM/YYYY formats.

Example: 1/1/2014, 10/1/2014, 10/10/2014,1/10/2014 

I need only Year in these columns data. 

Is there any way to handle this in derived column to get year?

Please advise.

Thanks,

Raghavendra