日期 | 单位:美元/小时 |
2009-07-24 | 7.25 |
2008-07-24 | 6.55 |
2007-07-24 | 5.85 |
1997-09-01 | 5.15 |
1996-10-01 | 4.75 |
1991-04-01 | 4.25 |
1990-04-01 | 3.80 |
1981-01-01 | 3.35 |
1980-01-01 | 3.10 |
1979-01-01 | 2.90 |
1978-01-01 | 2.65 |
1977-01-01 | 2.30 |
1976-01-01 | 2.20 |
1975-01-01 | 2.00 |
1974-05-01 | 1.90 |
1971-02-01 | 1.60 |
1970-02-01 | 1.45 |
1969-02-01 | 1.30 |
1968-02-01 | 1.15 |
1967-02-01 | 1.00 |
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