Timeline for all types of items produced by
BPS [Bullet-Proof Soft.] [Japan]

Year	Items
1984	7
1985	5
1986	4
1987	5
1988	13
1990	4
1991	9
1992	10
1993	6
1994	11
1995	10
1996	9
1997	5
1998	2
1999	7
2000	1

108 items with a valid date were considered for this timeline (94.74% of the total)
6 items with an invalid date.

Help us in our quest to find exact dates for:

198?: 6 items.