Monthly average daily rate of United States hotels from $2011$ to $2020($in U$.$S$.$ dollars$)$

Monthly average daily rate of U$.$S$.$ hotels $2011-2020$

Each line does not seem to fluctuate a lot indicating a minimal change from one month

to another. Does this mean the hotels in the U$.$S$.$ make about the same revenue every

month? Why or why not?

Think of a limitation to using ADR alone for hotel performance evaluation. Please describe.