There were also errors in other numbers, including personal income figures.
Indeed there is no opportunity to use an income figure in any way as a comparative measure of performance.
Both 1988 and 1987 net income figures are after a minority interest charge of $1.4 million.
The company did not provide income figures for the businesses.
They said the robust income figures suggested continued strength in the economy.
"Personal income figures to be released Thursday might give some sign of which direction the economy is headed."
The company does not break out separate net income figures.
However, the tax on $50,000 of taxable income figures to $9,058.
The applicable median income figure is adjusted by family size.
These results are particularly striking because the income figures include only wages and government benefits.