This occupation supported 1,404,000 jobs in 2012 and 1,426,400 jobs in 2014, reflecting an increase of 1.6%. In 2012, this occupation was projected to increase by 11.0% in 2022 to 1,558,199 jobs. As of 2014, to keep pace with prediction, the expected number of jobs was 1,434,800, compared with an observed value of 1,426,400, 0.6% lower than expected. This indicates current employment trends are about on track with the 2012 trend within this occupation. In 2014, this occupation was projected to increase by 6.4% in 2024 to 1,515,899 jobs. Linear extrapolation of the 2012 projection for 2022 results in an expected number of 1,589,000 jobs for 2024, 4.8% higher than the 2014 projection for 2024. This indicates expectations for future employment trends are worse than the 2012 trend within this occupation.