This occupation supported 5,514,800 jobs in 2012 and 5,680,500 jobs in 2014, reflecting an increase of 3.0%. In 2012, this occupation was projected to increase by 9.6% in 2022 to 6,046,000 jobs. As of 2014, to keep pace with prediction, the expected number of jobs was 5,621,000, compared with an observed value of 5,680,500, 1.1% 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 6.6% in 2024 to 6,046,000 jobs. Linear extrapolation of the 2012 projection for 2022 results in an expected number of 6,152,200 jobs for 2024, 1.8% higher than the 2014 projection for 2024. This indicates expectations for future employment trends are about on track with the 2012 trend within this occupation.