Timeline for all types of items produced by
Blue Ribbon Soft., Ltd.

Year	Items
1984	1
1985	30
1986	8
1987	9
1988	16
1989	12
1990	2
1991	3

81 items with a valid date were considered for this timeline (79.41% of the total)
21 items with an invalid date.

Help us in our quest to find exact dates for:

198?: 21 items.