Filter segwit spending by input age?

[gmaxwell]

I noticed your mempool explorer has a chart of segwit spending rates. I think it would be interesting to see a chart that shows segwit rates excluding outputs that are over a certain age.

For example, it would be interesting to see a line with the segwit rate excluding outputs created before segwit was activated-- because obviously those couldn't.

It would probably also be interesting to see one excluding outputs that are older than 1-3 months.

I suspect a lot of the variation in the existing chart is from variation in the amount of old coins being moved-- and doesn't really tell us anything about whats going on with segwit adoption today.