Timeline for all types of items produced by
Alligata Soft.

Year	Items
1983	27
1984	38
1985	19
1986	20
1987	21
1988	3
1989	2

130 items with a valid date were considered for this timeline (91.55% of the total)
12 items with an invalid date.

Help us in our quest to find exact dates for:

198?: 12 items.