Byte

YearVolumeMonth
19783Decemberx
19794Januaryx
Februaryx
Marchx
Aprilx
Mayx
June
Julyx
Augustx
Septemberx
Octoberx
Novemberx
December
19805Januaryx
Februaryx
Marchx
Aprilx
Mayx
Junex
Julyx
August
September
October
November
December
19838Octoberx