Timeline for all types of items produced by
DCS

Year	Items
1984	2
1985	3
1986	51
1987	19
1988	34
1989	42
1990	25
1991	2
1993	1
1995	2

181 items with a valid date were considered for this timeline (91.41% of the total)
17 items with an invalid date.

Help us in our quest to find exact dates for:

199?: 3 items.
19??: 14 items.