I believe 1970s is correct on that bike. They changed your hub at some point if it's a 97 model. However, what you have is more interesting than it first seems.

It appears at first to be a basic spec DL-1 with different stickers/badge. But if you look, the seat stays are the fixed Raleigh Sports type rather than bolt-on DL-1 type. The frame looks like a 23 or 24 inch frame, so it's almost like a large Sports type frame. The drops go forward and have the Sports-type shape.

Are those wheels 28 or 26 inches? They look 26 to me, with Sports-type peaked fenders to boot, not the usual round DL-1 type.

If they're 26 you have a somewhat interesting hybrid of DL-1 and Sports features there. If it's 28, then you have a somewhat unique frame in having fixed seat stays but 28 inch wheels. From what I can see, you don't just have a run of the mill DL-1 clone, but something a little bit different.