Load factors go up and down all the time.

Sometimes traffic increases faster than capacity, and load factor goes up.

Sometimes capacity increases faster than traffic, and load factor goes down.

Sometimes capacity doesn't increase or decrease much, but fear of war or pestilence decimates traffic, and load factor falls off a cliff.

Sometimes capacity can't increase much, but something attractive like a major sporting event brings a lot of traffic, and load factor skyrockets.

A tart's knickers would have difficulty keeping up.