This occupation supported 6,092,200 jobs in 2012 and 6,501,700 jobs in 2014, reflecting an increase of 6.7%. In 2012, this occupation was projected to increase by 21.4% in 2022 to 7,394,100 jobs. As of 2014, to keep pace with prediction, the expected number of jobs was 6,352,500, compared with an observed value of 6,501,700, 2.3% higher than expected. This indicates current employment trends are better than the 2012 trend within this occupation. In 2014, this occupation was projected to increase by 10.8% in 2024 to 7,160,700 jobs. Linear extrapolation of the 2012 projection for 2022 results in an expected number of 7,654,400 jobs for 2024, 6.9% higher than the 2014 projection for 2024. This indicates expectations for future employment trends are much worse than the 2012 trend within this occupation.