  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $16.55 |   | $18.47 | 
  | -$1.92 | 
| 2015 | $15.95 | +3.8% | $17.80 | 
+3.8% | -$1.85 | 
| 2014 | $15.64 | +2.0% | $17.45 | 
+2.0% | -$1.81 | 
| 2013 | $15.33 | +2.0% | $17.10 | 
+2.0% | -$1.77 | 
| 2012 | $15.07 | +1.7% | $16.81 | 
+1.7% | -$1.74 | 
| 2011 | $14.79 | +1.8% | $16.51 | 
+1.8% | -$1.71 | 
| 2010 | $14.56 | +1.6% | $16.25 | 
+1.6% | -$1.68 | 
| 2009 | $14.28 | +1.9% | $15.94 | 
+1.9% | -$1.65 | 
| 2008 | $13.89 | +2.8% | $15.51 | 
+2.8% | -$1.61 | 
| 2007 | $13.45 | +3.3% | $15.01 | 
+3.3% | -$1.56 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $16.55 |   | $20.53 | 
  | -$3.98 | 
| 2015 | $15.95 | +3.8% | $19.96 | 
+2.9% | -$4.00 | 
| 2014 | $15.64 | +2.0% | $19.53 | 
+2.2% | -$3.89 | 
| 2013 | $15.33 | +2.0% | $19.14 | 
+2.1% | -$3.80 | 
| 2012 | $15.07 | +1.7% | $18.81 | 
+1.7% | -$3.74 | 
| 2011 | $14.79 | +1.8% | $18.51 | 
+1.6% | -$3.71 | 
| 2010 | $14.56 | +1.6% | $18.20 | 
+1.7% | -$3.64 | 
| 2009 | $14.28 | +1.9% | $17.95 | 
+1.4% | -$3.66 | 
| 2008 | $13.89 | +2.8% | $17.49 | 
+2.6% | -$3.60 | 
| 2007 | $13.45 | +3.3% | $16.94 | 
+3.3% | -$3.48 | 
  | 
| Reference Date: 1st Quarter 2016 |