trouble-free [Adjective] + year [Noun]

Strength Strength Dispersion
A:
7
CHISQ:
31.04
AWT:
20,622,163
TTEST:
2.22
G2:
17.88
FAWT:
2.64
MI:
2.63
LOGLOG:
7.39
JD:
0.49
MI3:
8.25
DICE:
0.01
RANGE: