From the excerpt:
This section illustrates projected employment change for industries over the 2010-20 decade. Workers are grouped into an industry according to the type of good produced or service provided by the establishment for which they work. For example, everyone who is on a construction company’s payroll is part of the construction industry, regardless of his or her job duties. The construction industry includes not only construction workers, such as carpenters and roofers, but also other workers, such as office managers and truck drivers.
Industry employment projections are shown in terms of numeric change (growth or decline in the total number of jobs) and percent change (the rate of job growth or decline). Unlike the employment totals in the occupational charts, however, the employment totals in this section cover only wage and salary workers and do not include self-employed or unpaid family workers.
Employment growth for all wage and salary workers is projected to average about 15 percent between 2010 and 2020. This average is shown as a dotted vertical line in two charts.