0-3 MONTHS 1 3-6 MONTHS 7 6-9 MONTHS 4 9-12 MONTHS 8 12-18 MONTHS 10 18-24 MONTHS 8 2 YEARS 9 3 YEARS 5 4 YEARS 6 5 YEARS 5 6 YEARS 5 7 YEARS 3 8 YEARS 6 9 YEARS 6 10 YEARS 7 11 YEARS 4 12 YEARS 5 13 YEARS 5 14 YEARS 5 15 YEARS 2 16 YEARS 1