Blimey, so that means that series seven episode two happens in July 2015, Ponds' time. Rory says he's thirty-one in that episode, which means he was born in 1984. Wiki says Amy was seven when the Doctor landed in her garden, which means she was born in 1989 making her twenty-six in 2015.

But. Like you said - how much travelling has she done within those trips away?

(As soon as Rory said how old he was, I started trying to work out when he was born and I knew I'd have to check this post.)