This occupation supported 2,474,500 jobs in 2012 and 2,532,700 jobs in 2014, reflecting an increase of 2.4%. In 2012, this occupation was projected to increase by 7.3% in 2022 to 2,654,000 jobs. As of 2014, to keep pace with prediction, the expected number of jobs was 2,510,400, compared with an observed value of 2,532,700, 0.9% 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 2.7% in 2024 to 2,599,900 jobs. Linear extrapolation of the 2012 projection for 2022 results in an expected number of 2,689,900 jobs for 2024, 3.5% higher than the 2014 projection for 2024. This indicates expectations for future employment trends are worse than the 2012 trend within this occupation.