| 1960 | 1965 | 1970 | 1975 | 1980 | 1985 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | |
| 24.7 | 27.7 | 35.4 | 50.5 | 72.7 | 94.7 | 100.0 | 103.4 | 108.1 | 112.4 | 115.9 | 119.7 | |
| Private | 25.8 | 28.9 | 36.4 | 51.7 | 73.8 | 95.2 | 100.0 | 103.2 | 107.8 | 112.0 | 115.1 | 118.9 |
| 26.2 | 29.7 | 37.3 | 52.7 | 74.6 | 95.5 | 100.0 | 103.0 | 107.7 | 111.7 | 114.6 | 118.2 | |
| 15.6 | 17.0 | 23.6 | 36.9 | 58.4 | 89.1 | 100.0 | 105.6 | 112.0 | 119.0 | 126.0 | 132.9 | |
| 30.7 | 32.7 | 41.4 | 57.9 | 76.8 | 95.6 | 100.0 | 102.3 | 106.6 | 110.4 | 114.3 | 117.8 | |
| 32.0 | 36.3 | 43.2 | 59.4 | 79.6 | 96.9 | 100.0 | 100.7 | 103.8 | 106.5 | 109.9 | 113.1 | |
| 27.5 | 30.2 | 36.1 | 50.1 | 74.8 | 94.1 | 100.0 | 104.6 | 108.2 | 112.0 | 116.3 | 119.7 | |
| Government | 20.3 | 24.1 | 32.4 | 46.9 | 69.0 | 92.6 | 100.0 | 104.5 | 109.0 | 114.3 | 119.7 | 123.5 |
| 20.0 | 25.1 | 34.4 | 49.8 | 72.7 | 94.8 | 100.0 | 103.8 | 107.4 | 111.8 | 115.9 | 118.7 | |
| 26.4 | 28.4 | 34.0 | 48.4 | 73.5 | 93.4 | 100.0 | 105.3 | 109.0 | 113.0 | 117.5 | 120.9 | |
| 17.7 | 19.1 | 26.2 | 39.4 | 60.5 | 87.9 | 100.0 | 106.3 | 112.7 | 119.9 | 127.7 | 132.7 | |
| 31.8 | 36.1 | 44.5 | 61.7 | 79.2 | 95.4 | 100.0 | 101.3 | 104.2 | 107.5 | 110.4 | 113.5 | |
| Addendum: | ||||||||||||
| 26.0 | 28.4 | 35.2 | 49.2 | 71.7 | 94.4 | 100 | 103.9 | 108.5 | 113.3 | 117.6 | 120.9 | |
1. Includes research and development expenditures by FFRDC's administered by industry.
FFRDC Federally funded research and development center