I'm assuming since she's a co-signer, she's been included in the family member calculation for ALL years.
Size of Family Unit
MNI
2018
MNI
2017
MNI
2016
MNI
2015
2 persons
$40,379
$39,813
$39,371
$38,618
3 persons
$49,641
$48,945
$48,404
$47,476
4 persons
$60,271...