Year
1969
1 350
387
1970
1 370
890
1971
1 700
5 401a
1972
1 400
4 583
1973
4 370
2 860
1974
3 000
--- b
1975
3 190
---
*Includes the Tracking and Data Relay Satellite System (TDRSS).
a The amount programmed for new systems only was estimated at $1 730 000 in the FY 1972 budget estimate.
b The amount programmed for spacecraft-to-ground communications, telemetry, and command was estimated at $3 360 000 in the FY 1975 budget estimate; the advanced systems category was not broken down by individual projects in the FY 1976 through FY 1980 budget estimates.