Table:
text: List of regional airliners
Three-abreast cabin
Three-abreast cabin
Model Seats Period Built Country
Saab 90 Scandia 24-32 1946-1954 18 Sweden
Aérospatiale N 262 23-29 1962-1976 110 France
Short SC.7 Skyvan 19 1963–1986 153 United Kingdom
De Havilland Canada DHC-6 Twin Otter 19 1965–1988, 2008–present 846 Canada
Embraer EMB 110 Bandeirante 18-21 1968–1990 500 Brazil
Handley Page Jetstream 16 1969-1993 66 United Kingdom
Let L-410 Turbolet 19 1971-present 1138 Czech Republic
Short 330 30 1974–1992 125 United Kingdom
CASA C-212 Aviocar 26 1974–present 578 Spain
Antonov An-28 / PZL M28 18 1975-1993 / 1993-2006 191 / 39 Ukraine / Poland
BAe Jetstream 18 1980-1993 386 United Kingdom
Short 360 36-39 1981–1991 165 United Kingdom

Question: In what period were 578 triple-cabin regional aircraft built?