This occupation supported 545,300 jobs in 2012 and 520,500 jobs in 2014, reflecting a decline of 4.5%. In 2012, this occupation was projected to increase by 1.0% in 2022 to 551,000 jobs. As of 2014, to keep pace with prediction, the expected number of jobs was 546,400, compared with an observed value of 520,500, 4.7% lower than expected. This indicates current employment trends are worse than the 2012 trend within this occupation. In 2014, this occupation was projected to decrease by 7.3% in 2024 to 480,500 jobs. Linear extrapolation of the 2012 projection for 2022 results in an expected number of 552,100 jobs for 2024, 14.9% higher than the 2014 projection for 2024. This indicates expectations for future employment trends are much worse than the 2012 trend within this occupation.