This occupation supported 145,355,800 jobs in 2012 and 150,539,900 jobs in 2014, reflecting an increase of 3.6%. In 2012, this occupation was projected to increase by 10.8% in 2022 to 160,983,700 jobs. As of 2014, to keep pace with prediction, the expected number of jobs was 148,481,300, compared with an observed value of 150,539,900, 1.4% 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 6.7% in 2024 to 160,328,800 jobs. Linear extrapolation of the 2012 projection for 2022 results in an expected number of 164,109,200 jobs for 2024, 2.4% higher than the 2014 projection for 2024. This indicates expectations for future employment trends are worse than the 2012 trend within this occupation.