8 players left, 5 get paid.

Blinds: $800/$1,600
Ante: $200

UTG ($96,818) - Folds
UTG+1 ($21,824) - Folds
Lojack ($25,272) - Folds
Hijack ($30,541) - Folds
Cut off ($19,455) - Folds
Button ($29,952) - Shoves for 18.72 BB
Small Blind ($52,512) - Folds
Big Blind ($21,226) - Calls

Board: 3-K-A-Q-A

Button: A7
Big Blind: 66

I am the Big Blind in this situation. I called 66 here because I figured it was ahead of most of his range. 22-55, as well as hands like A2,A3,A4,A5,A6. But considering 6 of us had between 12 and 19 BB's, should I have folded? I feel this is a close spot, but I am not a pro with ICM yet.

Thanks!