I am at 30 and the last year has felt just as long as 2011 did for me. I've been seeing these articles and comments about time speeding up since my teens and I am still waiting for it to happen to me. I am inclined to think the perception of time is tied to routine or behaviour and ageing is merely a confounder. This would explain the lack of time dilation for me - my life is still somewhat unstable and filled with novelty, so I don't really forget large chunks of time doing routine stuff.
