In the last two Fiscal Years, 1997 and 1998, Standard A mail grew at an average annual rate of 7.5 percent, five times higher than First-Class Mail.
Standard A mail grew due to the decreasing popularity of its competitors.
mnli hypothesis: Standard A mail grew due to the decreasing popularity of its competitors. premise: In the last two Fiscal Years, 1997 and 1998, Standard A mail grew at an average annual rate of 7.5 percent, five times higher than First-Class Mail.