This occupation supported 2,570,900 jobs in 2012 and 2,624,200 jobs in 2014, reflecting an increase of 2.1%. In 2012, this occupation was projected to increase by 7.0% in 2022 to 2,751,600 jobs. As of 2014, to keep pace with prediction, the expected number of jobs was 2,607,000, compared with an observed value of 2,624,200, 0.7% higher 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 4.2% in 2024 to 2,731,700 jobs. Linear extrapolation of the 2012 projection for 2022 results in an expected number of 2,787,700 jobs for 2024, 2.1% higher than the 2014 projection for 2024. This indicates expectations for future employment trends are worse than the 2012 trend within this occupation.