Owner age,"Building equipment contractors, employer firms (%)","Specialty trade contractors, employer firms (%)","Construction, employer firms (%)","All industries, employer firms (%)","Building equipment contractors, nonemployer firms (%)"
Under 25,0.3,0.5,0.6,0.4,7.3
25 to 34,4.8,6.0,5.7,5.3,17.8
35 to 44,19.4,19.2,19.0,18.0,22.4
45 to 54,26.6,25.8,25.6,25.0,20.7
55 to 64,29.3,29.3,29.2,28.2,18.9
65 or over,19.7,19.1,19.9,23.1,12.9
55 or older (calculated),49.0,48.4,49.1,51.3,31.8
Owners reporting age,154621,363253,552579,4208231,370000