|
|
|
|
| |
|
|
| |||
|
. | ||||
|
1969 |
4,252 |
3,561 |
1.194 |
6.3 |
|
1970 |
3,753 |
2,950 |
1.272 |
6.5 |
|
1971 |
3,382 |
2,520 |
1.342 |
5.5 |
|
1972 |
3,423 |
2,419 |
1.415 |
5.4 |
|
1973 |
3,315 |
2,219 |
1.494 |
5.6 |
|
1974 |
3,256 |
2,035 |
1.598 |
7.0 |
|
1975 |
3,267 |
1,879 |
1.739 |
8.8 |
|
1976 |
3,669 |
1,935 |
1.896 |
9.0 |
|
1977 |
3,945 |
1,878 |
2.101 |
10.8 a |
|
1978 |
3,983 |
1,758 |
2.265 |
7.8 |
a TQ and 1977.
Source: Senate hearings.