Timeline for all types of items produced by Bothtec, Inc. [Japan]

Year	Items
1984	14
1985	21
1986	19
1987	8
1988	12
1989	8
1990	8
1991	7
1992	4
1993	3
1994	2
1995	1
2002	1

108 items with a valid date were considered for this timeline (93.10% of the total)
8 items with an invalid date.

Help us in our quest to find exact dates for:

198?: 8 items.