  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $11.20 |   | $10.86 | 
  | $0.34 | 
| 2015 | $10.90 | +2.7% | $10.57 | 
+2.7% | $0.33 | 
| 2014 | $10.69 | +2.0% | $10.36 | 
+2.0% | $0.32 | 
| 2013 | $10.55 | +1.3% | $10.23 | 
+1.3% | $0.32 | 
| 2012 | $10.40 | +1.5% | $10.08 | 
+1.5% | $0.32 | 
| 2011 | $10.25 | +1.4% | $9.94 | 
+1.4% | $0.31 | 
| 2010 | $10.14 | +1.1% | $9.84 | 
+1.1% | $0.31 | 
| 2009 | $9.94 | +2.0% | $9.64 | 
+2.0% | $0.30 | 
| 2008 | $9.67 | +2.8% | $9.38 | 
+2.8% | $0.29 | 
| 2007 | $9.29 | +4.1% | $9.01 | 
+4.1% | $0.28 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $11.20 |   | $20.98 | 
  | -$9.78 | 
| 2015 | $10.90 | +2.7% | $20.39 | 
+2.9% | -$9.49 | 
| 2014 | $10.69 | +2.0% | $19.96 | 
+2.2% | -$9.27 | 
| 2013 | $10.55 | +1.3% | $19.55 | 
+2.1% | -$9.00 | 
| 2012 | $10.40 | +1.5% | $19.22 | 
+1.7% | -$8.82 | 
| 2011 | $10.25 | +1.4% | $18.92 | 
+1.6% | -$8.66 | 
| 2010 | $10.14 | +1.1% | $18.60 | 
+1.7% | -$8.45 | 
| 2009 | $9.94 | +2.0% | $18.35 | 
+1.4% | -$8.40 | 
| 2008 | $9.67 | +2.8% | $17.88 | 
+2.6% | -$8.20 | 
| 2007 | $9.29 | +4.1% | $17.31 | 
+3.3% | -$8.01 | 
  | 
| Reference Date: 1st Quarter 2016 |