How Clear Should Speech be for a 2 yr, 3yr, 4 yr and 5 year old?

This video describes at what % children should 'typically' be understood for their age. Remember these are based on an 'unknown adult' listening to your child's speech, not a sibling or parents as they often de-code speech errors so that they can understand almost everything while other adults/children can find it very hard to understand what your child is saying. Forward to a friend, leave a comment or question and I will get to it