Timeline for all types of items produced by
Pulser Soft.

Year	Items
1985	1
1987	3
1988	13
1989	2
1990	1

20 items with a valid date were considered for this timeline (80.00% of the total)
5 items with an invalid date.

Help us in our quest to find exact dates for:

198?: 4 items.
19??: 1 item.