state distribution 1099-R Box 16 blank, Box 14 has 0.00 in it

Hello, on my 1099-R 

Box 1 has an amount

Box 2a is blank

Box 2b has taxable amount not determined

Box 14 has 0.00 (not blank)

Box 15 has NC/ (no state number)

Box 16 is blank

Question for Turbotax entry - is the NC distribution amount the same as Box 1 or leave it blank?

Thanks!