How old is David Archuleta's siblings?

The Archuleta's five siblings consist of 3 girls and 2 boys with David being the 2nd oldest. Listed in order from eldest to youngest: Claudia-18- claudia is 19 now David- 17 - david is 18 . his b'day is on the 28th december Daniel- 14 Jazzy- 11 Amber- 9