Ankita has to climb 5 stairs starting at the ground, while respecting the following rules:

1. At any stage, Ankita can move either one or two stairs up.

2. At any stage, Ankita cannot move to a lower step.

Let 𝐹(𝑁) denote the number of possible ways in which Ankita can reach the 𝑁 𝑡ℎ stair. For example, 𝐹(1) = 1, 𝐹(2) = 2, 𝐹(3) = 3.

The value of 𝐹(5) is _______.