Year 1:
* Start with 2 monkeys.
* They have 2 babies.
* Total: 2 + 2 = 4 monkeys
Year 2:
* Now you have 4 monkeys (2 pairs).
* Each pair has 2 babies.
* Total: 4 + (2 * 2) = 8 monkeys
Year 3:
* Now you have 8 monkeys (4 pairs).
* Each pair has 2 babies.
* Total: 8 + (4 * 2) = 16 monkeys
Year 4:
* Now you have 16 monkeys (8 pairs).
* Each pair has 2 babies.
* Total: 16 + (8 * 2) = 32 monkeys
Year 5:
* Now you have 32 monkeys (16 pairs).
* Each pair has 2 babies.
* Total: 32 + (16 * 2) = 64 monkeys
Therefore, after 5 years, there would be 64 monkeys in the jungle.