How often am I raising this?

Opponent just sat down. Looks like the usual PokerStars semi-tight passive nit.

PokerStars No-Limit Hold'em, $0.50 BB (9 handed) FTR converter on zerodivide.cx

Button ($60.85)
SB ($6)
BB ($20)
UTG ($26.90)
UTG+1 ($44.25)
MP1 ($24.50)
MP2 ($33.65)
MP3 ($36.20)
Fnord ($47)

Preflop: Fnord is CO with 2, 2.
5 folds, Fnord raises to $2, 2 folds, BB calls $1.50.

Flop: ($4.25) A, 4, J (2 players)
BB bets $1.5, Fnord ...