At 18 months, Jacob is:
weight: 30 lbs. 7 oz. - 90th percentile
height: 34.6 inches - 95th percentile
at 5 years, Joseph is:
weight: 44 lbs. 12 oz. - 75th percentile
height: 43.9 inches - 75th percentile
Basically both are growing like weeds. I will think that they're all set for clothes and then turn around and Joseph's pants are too short. Fortunately Jacob gets to take advantage of Joseph's many hand-me-downs.