  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $21.22 |   | $24.44 | 
  | -$3.22 | 
| 2015 | $20.69 | +2.5% | $23.83 | 
+2.5% | -$3.14 | 
| 2014 | $20.27 | +2.1% | $23.34 | 
+2.1% | -$3.07 | 
| 2013 | $19.84 | +2.1% | $22.85 | 
+2.1% | -$3.01 | 
| 2012 | $19.55 | +1.5% | $22.52 | 
+1.5% | -$2.96 | 
| 2011 | $19.13 | +2.2% | $22.03 | 
+2.2% | -$2.90 | 
| 2010 | $18.91 | +1.2% | $21.78 | 
+1.2% | -$2.86 | 
| 2009 | $18.58 | +1.7% | $21.40 | 
+1.7% | -$2.82 | 
| 2008 | $18.04 | +3.0% | $20.78 | 
+3.0% | -$2.73 | 
| 2007 | $17.51 | +3.0% | $20.17 | 
+3.0% | -$2.65 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $21.22 |   | $20.85 | 
  | $0.37 | 
| 2015 | $20.69 | +2.5% | $20.27 | 
+2.9% | $0.43 | 
| 2014 | $20.27 | +2.1% | $19.83 | 
+2.2% | $0.43 | 
| 2013 | $19.84 | +2.1% | $19.43 | 
+2.1% | $0.41 | 
| 2012 | $19.55 | +1.5% | $19.10 | 
+1.7% | $0.45 | 
| 2011 | $19.13 | +2.2% | $18.80 | 
+1.6% | $0.33 | 
| 2010 | $18.91 | +1.2% | $18.48 | 
+1.7% | $0.42 | 
| 2009 | $18.58 | +1.7% | $18.23 | 
+1.4% | $0.35 | 
| 2008 | $18.04 | +3.0% | $17.77 | 
+2.6% | $0.27 | 
| 2007 | $17.51 | +3.0% | $17.20 | 
+3.3% | $0.31 | 
  | 
| Reference Date: 1st Quarter 2016 |