  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $18.90 |   | $33.41 | 
  | -$14.51 | 
| 2015 | $18.42 | +2.6% | $32.56 | 
+2.6% | -$14.14 | 
| 2014 | $18.08 | +1.9% | $31.95 | 
+1.9% | -$13.87 | 
| 2013 | $17.73 | +1.9% | $31.34 | 
+1.9% | -$13.61 | 
| 2012 | $17.39 | +2.0% | $30.73 | 
+2.0% | -$13.34 | 
| 2011 | $17.12 | +1.6% | $30.25 | 
+1.6% | -$13.13 | 
| 2010 | $16.82 | +1.8% | $29.72 | 
+1.8% | -$12.90 | 
| 2009 | $16.64 | +1.1% | $29.41 | 
+1.1% | -$12.77 | 
| 2008 | $16.14 | +3.1% | $28.53 | 
+3.1% | -$12.39 | 
| 2007 | $15.60 | +3.5% | $27.58 | 
+3.5% | -$11.97 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $18.90 |   | $21.85 | 
  | -$2.95 | 
| 2015 | $18.42 | +2.6% | $21.24 | 
+2.9% | -$2.81 | 
| 2014 | $18.08 | +1.9% | $20.78 | 
+2.2% | -$2.70 | 
| 2013 | $17.73 | +1.9% | $20.37 | 
+2.1% | -$2.63 | 
| 2012 | $17.39 | +2.0% | $20.02 | 
+1.7% | -$2.63 | 
| 2011 | $17.12 | +1.6% | $19.70 | 
+1.6% | -$2.58 | 
| 2010 | $16.82 | +1.8% | $19.37 | 
+1.7% | -$2.55 | 
| 2009 | $16.64 | +1.1% | $19.11 | 
+1.4% | -$2.47 | 
| 2008 | $16.14 | +3.1% | $18.62 | 
+2.6% | -$2.47 | 
| 2007 | $15.60 | +3.5% | $18.02 | 
+3.3% | -$2.42 | 
  | 
| Reference Date: 1st Quarter 2016 |