Timeline for all types of items produced by
HummingBird [Japan]

Year	Items
1983	3
1984	7
1985	3
1986	2
1987	6
1988	4
1989	6
1990	3
1991	1
1992	6
1993	4
1994	4

49 items with a valid date were considered for this timeline (92.45% of the total)
4 items with an invalid date.

Help us in our quest to find exact dates for:

198?: 3 items.
19??: 1 item.