Mine tends to go through little phases. About an hour in the morning when I get to work it'll start bouncing around.
Then in the early evening it tends to have hiccups, then as the evening goes on it starts with the wriggling, boxing, kicking, bouncing and generally battering me from the inside - but I love it!
I couldn't possibly count the actual movements as it's highly active these days, but I would say on at least 3 occasions a day it is well and truly moving around.