The phrase "are increasing even faster" is correct and usable in written English.
You can use it when discussing trends or changes that are happening at an accelerating rate compared to previous measurements or expectations.
Example: "The number of online users are increasing even faster than we anticipated, indicating a significant shift in consumer behavior."
Alternatives: "are rising at an even quicker pace" or "are growing even more rapidly."
Emissions of sulfur dioxide from coal and fuel oil, which can cause respiratory and cardiovascular diseases as well as acid rain, are increasing even faster than China's economic growth.
Mr. Garbarino added that sales are increasing even faster for the Supermatic, his company's $50 desktop cigarette maker, which turns out a filtered cigarette that is all but indistinguishable from a mass-produced one.
The diversity of the nation's children is increasing even faster than was previously expected, said William H. Frey, a demographer at the Brookings Institution.
Their GDP is growing at over 4% a year, albeit from an abysmally low base, and their taste for consumer goods is increasing even faster.
While their ranks are growing and their budget is increasing even faster, Special Operations Forces have yet to fulfill completely Defense Secretary Donald H. Rumsfeld's order 18 months ago to take control of the military's counterterrorism mission.
Consequently, the design and planning of power systems is becoming a progressively more important issue in order to provide affordable, reliable and sustainable energy in timely fashion, not only in developed countries but particularly in developing economies where electricity demand is increasing even faster.
The usage of the Marine Genomics infrastructure has been speedily increasing with more species databases being added and the numbers of sequences increasing even faster.
Increasing even faster than the number of transistors on a chip is the amount of "interconnect"—the microscopic metal tracks linking them all.
Central-government receipts have risen by 5½% a year.Now it is poised to increase even faster.
5.3% increase in 2012 -- and we're on track to increase even faster in 2013.
