For comparison, about 2500 tons of gold is mined each year, which equates to about 80 million ounces. At $1,205/ounce, that's $96.4 billion. So Bitcoin would have to be about 1/3 as popular as gold if it were to happen right now.
That's an interesting statistic.
I often wonder what the ratio is of private vs institutional/governmental buying when it comes to gold.
I only know of one person who admits to any involvement in gold.