Year
.
1969
4 000 a
2 465 a
1970
3 000 a
1 700 a
1971
3 500 a
1 166
1972
1 300 a
1 232 b
1973
2 400
2 400 b
1974
2 400 b
--
1975
70 b
--
a For spacecraft and support (GEOS 1 and 2).
b Not specified as to mission.