CBP data indicates that there are more establishments categorized as retail trade businesses with between one and four employees in 1040 than in any other category.
The following table shows how many construction businesses with between one and four employees were in 1040 during the period from 2012 to 2016.
Construction businesses with between one and four employees in 1040 (2012-2016)
Year
Total businesses
2012
22
2013
24
2014
27
2015
26
2016
30