Thoughts?
In january 2017, consumer spending in the united states for the year topped out at $11,640,000,000,000.
If there are 20 million bitcoins, 1 btc would need to be worth $582,000 & all btc would need to be spent in a 12 month period to match that.
If each bitcoin was worth $58,200 and each btc was spent 10 times in 12 months, that might get spending numbers near to that amount.
Or if each btc was worth $5,820 and each btc was spent 100 times in 12 months, that might work too.
Volume and exchange rates could factor into it to some degree.