A man put a pair of youngster rabbits in a field surrounded by a wall. Rabbits are able to mate and have babies when they become adults (the month after they are youngsters). Suppose that our rabbits never die and that the female always produces one new pair (one male, one female) each month after becoming adults. How many pairs of rabbits can be produced from that pair in a year if all of these points are true for each subsequent pair of rabbits?