The 1960 earthquakes ruptured the area south 37S - these are for the fault
between about 32 and 37S. Earthquakes in that fault segment have a similar
interevent time with more variability in recent years:

1575 Mw 8.4
82 years
1657 Mw 8.4
80 years
1737 Mw 8.5
100 years
1837 Mw 8.0
122 years
1960 Mw 9.5
?