Timeline for all types of items produced by
Adventure Probe Soft.

Year	Items
1986	1
1988	1
1990	1
1991	1
1992	1
1994	1
1995	2
1996	2
1998	3
1999	3
2000	3
2002	3
2003	1

23 items with a valid date were considered for this timeline (21.10% of the total)
86 items with an invalid date.

Help us in our quest to find exact dates for:

198?: 21 items.
199?: 65 items.