Gap increased 7.6percenttoto $21.18.
For women, the wage gap increased from 6% in 1979, to 19% in 2015.
The Commerce Department said on Tuesday the trade gap increased 4.9 percent to $42.2 billion.
The gap increased to 14% for independent school applicants gaining three A* grades when compared with applicants from non-selective or comprehensive state schools achieving the same grades.
The tax gap increased last year, though the Government argues that it is on a "long-term downward trend".
Britain's 12-month trade gap increased to $39.7 billion in April; its 12-month current-account surplus fell to $0.6 billion in the first quarter.
Both in 1973 and in 2006, black students were suspended at higher rates than whites, but over that period, the gap increased.
The figures for England, Wales and Northern Ireland show that the gender gap increased slightly this summer, with 71.3% of girls' entries awarded a C grade or above, compared with 62.4% of boys'.
The improvement in the relative economic status of African-Americans halted in the mid-1970's, especially for college graduates, and the earnings gap increased slightly in the 1980's.
While the report found relatively little difference in employment rates between obese adults and those of normal weight – 68% and 70% respectively – the gap increased by more than 10 percentage points for severely obese people.
Instead, it has been enforced at huge human cost – forced late-term abortions, a worsening gender gap, increased trauma and economic stress for parents who lose their only child, and punitive fines for families such as Li's.
