From 0 to 60, it costs 1 training point (TPE) to improve an attribute by one.
From 60 to 70, it costs 2 points to improve by one.
From 70 to 80, it costs 4 points to improve by one.
From 80 to 90, it costs 8 points to improve by one.
From 90 to 99, it costs 12 points to improve by one. (Strengths only.)

AC +2
Training +3 tpe

155+5=160 tpe

SK = Skating: 69 > 70 +2 tpe
PA = Passing 63>64 +2 tpe
DF = Defense: 51>52 +1 tpe