This occupation supported 5,375,600 jobs in 2012 and 6,006,100 jobs in 2014, reflecting an increase of 11.7%. In 2012, this occupation was projected to increase by 20.9% in 2022 to 6,498,500 jobs. As of 2014, to keep pace with prediction, the expected number of jobs was 5,600,100, compared with an observed value of 6,006,100, 7.2% higher than expected. This indicates current employment trends are much better than the 2012 trend within this occupation. In 2014, this occupation was projected to increase by 14.7% in 2024 to 6,798,200 jobs. Linear extrapolation of the 2012 projection for 2022 results in an expected number of 6,723,000 jobs for 2024, 1.1% lower than the 2014 projection for 2024. This indicates expectations for future employment trends are about on track with the 2012 trend within this occupation.