increase by

increase (something) by (something)

To expand something to a certain extent. Our aggressive new marketing campaign has increased our small company by 25 percent in the past year. What was once a tiny local choir club has increased by leaps and bounds over the years, becoming one of the state's largest organized choir communities.
See also: by, increase

increase something by something

to enlarge something by an amount or degree. They increased the size of the house by two hundred square feet. The engine size on the new model has been increased by a small amount.
See also: by, increase
References in classic literature ?
The supply of food, on an average, remains constant, yet the tendency in every animal to increase by propagation is geometrical; and its surprising effects have nowhere been more astonishingly shown, than in the case of the European animals run wild during the last few centuries in America.
BR is expected to increase by 4% over the term from 529 in 1995 to 553 in the year 2000 for an annual average rate near 1%.
Funding for the Superconducting Super Collider (SSC), which supporters say will further unlock the structure of matter, would increase by $125 million, or 21.
The number of listings is expected to increase by 11 per cent.
Given these internal and external restraints on costs, the Federal Reserve System's expenses are projected to increase by an average annual rate of 5.
The Energy Department's nuclear physics budget would increase by 9.
Efforts to improve undergraduate education and provide research opportunities for undergrads would increase by $44 million (48 percent), for a total of $134 million.
9 percent, and employment is expected to increase by 16.