'experienced fluctuation' is technically correct and usable in written English.
You can use it to describe an event or situation that has seen volatility or instability, usually over a certain period of time. For example, "The stock market experienced considerable fluctuations over the last twelve months."
Although there was a steady upward trend of the number of teachers from 2006 to 2010, it experienced fluctuations in 2011 and 2012.
LT has experienced fluctuations in lake level [19], but unlike LM and LV, is not thought to have experienced near or complete desiccation.
All participants experienced fluctuations.
Some countries experienced fluctuations in rates from one period to another, in particular for singletons.
Likewise, despite the designation of chronic, CCH patients also experience fluctuations in attack frequency [20].
Transionospheric radio signals may experience fluctuations in their amplitude and phase due to irregularity in the spatial electron density distribution, referred to as scintillation.
Extremely low gestational age neonates with chronic lung disease requiring oxygen therapy frequently experience fluctuations in arterial oxygen saturation or intermittent hypoxia (IH).
As for total polyphenols in olives, their contents are experiencing fluctuations during ripening, they increase at color change after applying of treatment, and then decrease during ripening before increasing again at full maturity.
Just as any other park in the Orlando area, throughout the day you'll experience fluctuations in crowd density.
However, since the festival's 2014 edition, there have been a lot of changes in what defines this zeitgeist; we continue to experience fluctuations in what sounds and artists evolve and grow, begin to dissipate, and inevitably, those that simply refuse to go away (sorry, Benny Benassi).
