Business has increased tenfold in the past two years.tenfoldten‧fold /ˈtenfəʊld $ -foʊld/ adjective, adverb 
Business has increased tenfold in the past two years.
EXAMPLES FROM OTHER DICTIONARIES
- Traffic across the border has increased tenfold.
COLLOCATIONS FROM THE ENTRY Business has increased tenfold in the past two years.COLLOCATIONS FROM THE CORPUSNOUN
ten times as much or as many of something: Business has increased tenfold in the past two years.· Many show more than a tenfold increase in acidity since 1850.
Business has increased tenfold in the past two years.