Hard to say for sure; but I think AprilSeven, one of our moderators probably has you beat.
She's turning 58 soon and she started getting into the series since the B&W series was on TV.
I myself am 16, so I can't really compete. I remember seeing the 03 series on Toonami a few times when I was very young. The movie brought the memory back and it got me into the series.