"increases relative to" is an appropriate and usable phrase in written English.
You can use it to compare one thing to another, indicating that the first thing has seen an increase compared to the other. For example: "The cost of living has increased relative to wages in the last five years."
In particular, OB increases relative to OP.
The frequency of major disruption increases relative to pre-industrial levels under all three scenarios.
In the surface-dwellers, brain size increases relative to body mass, such that bigger individuals have larger brains.
The ratio of secular to total temperature η is a function of trap parameters and decreases as micromotion increases relative to the secular motion.
Using regression analysis, I find that compensation systems with unequal percentage increases relative to increases in responsibility are associated with lower future firm performance.
For low Sc and Nb doping fractions we find that the oxygen vacancy formation increases relative to undoped SrCoO3.
Under President Ronald Reagan, substantial increases in military spending coincided with comparable increases, relative to gross domestic product, in personal consumption -- that proportion of G.D.P. that the public, as opposed to the government, spends.
As demand increases relative to supply, many doctors are likely to turn away patients whose coverage would pay the lower rates.
While all households are facing rising costs of higher education relative to incomes, those truly in the middle of the income distribution are facing larger increases relative to their incomes than those households above them in the income distribution.
Not only is carbon dioxide more effective than steam at increasing the mixture cell width, but also its effectiveness increases relative to that of steam with increasing concentrations.
Flame temperature increases relative to a nitrogen diluted flame, which results in a higher surface growth rate, when carbon monoxide is added.
