  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $10.17 |   | $9.82 | 
  | $0.35 | 
| 2015 | $9.90 | +2.7% | $9.56 | 
+2.7% | $0.34 | 
| 2014 | $9.70 | +2.0% | $9.37 | 
+2.0% | $0.33 | 
| 2013 | $9.58 | +1.3% | $9.25 | 
+1.3% | $0.33 | 
| 2012 | $9.44 | +1.5% | $9.12 | 
+1.5% | $0.32 | 
| 2011 | $9.31 | +1.4% | $8.99 | 
+1.4% | $0.32 | 
| 2010 | $9.21 | +1.1% | $8.89 | 
+1.1% | $0.32 | 
| 2009 | $9.03 | +2.0% | $8.72 | 
+2.0% | $0.31 | 
| 2008 | $8.78 | +2.8% | $8.48 | 
+2.8% | $0.30 | 
| 2007 | $8.44 | +4.1% | $8.15 | 
+4.1% | $0.29 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $10.17 |   | $22.30 | 
  | -$12.13 | 
| 2015 | $9.90 | +2.7% | $21.68 | 
+2.9% | -$11.77 | 
| 2014 | $9.70 | +2.0% | $21.21 | 
+2.2% | -$11.51 | 
| 2013 | $9.58 | +1.3% | $20.78 | 
+2.1% | -$11.20 | 
| 2012 | $9.44 | +1.5% | $20.43 | 
+1.7% | -$10.98 | 
| 2011 | $9.31 | +1.4% | $20.11 | 
+1.6% | -$10.79 | 
| 2010 | $9.21 | +1.1% | $19.77 | 
+1.7% | -$10.55 | 
| 2009 | $9.03 | +2.0% | $19.50 | 
+1.4% | -$10.47 | 
| 2008 | $8.78 | +2.8% | $19.00 | 
+2.6% | -$10.21 | 
| 2007 | $8.44 | +4.1% | $18.40 | 
+3.3% | -$9.95 | 
  | 
| Reference Date: 1st Quarter 2016 |