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