2 - Number of weddings he attended.
4 - Number of haircuts he received.
5 - Number of great-grandparents he met.
8 - Number of states he entered: Arizona, Illinois, Indiana, Ohio, Kentucky [very briefly], Iowa, Minnesota and Wisconsin (he's already more worldly at 16 months than a lot of the people I went to school with)
9 - Number of words he learned to say: Mama, Dada, no, cat, dog, cheese, go, shoes and boo (which means "moo" - he says it when you ask what a cow says).
1,235,321 - Number of compliments he received on his hair.
Infinite - Number of times he's hit his head.
Happy New Year's!