Central banks have been big buyers of gold for over 10 years. Here is why they do it.

· *A number of central banks have loaded up on gold in the last year, according to data from World Gold Council.*
· *Central banks own gold as part of their portfolios, which include foreign exchange reserves. *
· *Gold hit record highs above $2,000 an ounce this month, before seeing its biggest daily drop in 7 years...