This is a talk from a former Dean at Stanford University. It is a great talk for any parent that has young children. It is well worth a listen. I wish I had heard it when mine were young.
It is relevant to this discussion as she gives her thoughts on rankings such as mentioned here. If you...
Get a large jar. Every time you have sex the first year of marriage, put a Penney in the jar. After the first year and going forward, every time you have sex, take a Penney out of the jar. You will never empty the jar.
I read that as 20mil total and they've already spent 13 of it. May be wrong, but that's how I read it. 20 mil doesn't get you what it used to, that's for sure.