This is the 319th most frequent Japanese word.
増え
"Increase" or "growth" (noun form).
The word '増え' in this sentence derives from the verb '増える', which means 'to increase'. It is used in its -teimasu form to indicate a continuous state of increase in population.
人口が増えています。
The population is increasing.
Here, '増え' is used as part of the past tense construction '増えたら', with the conditional form 'たら' indicating that the increase in sales is a conditional event impacting subsequent growth.
売り上げが増えたら、会社はより成長します。
If sales increase, the company will grow more.
In this example, '増え' is in the non-past tense form '増えます', highlighting the gradual and ongoing nature of the accumulation of vocabulary useful in conversations.