  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $32.39 |   | $20.47 | 
  | $11.92 | 
| 2015 | $31.57 | +2.6% | $19.95 | 
+2.6% | $11.62 | 
| 2014 | $30.98 | +1.9% | $19.58 | 
+1.9% | $11.40 | 
| 2013 | $30.38 | +1.9% | $19.20 | 
+1.9% | $11.18 | 
| 2012 | $29.79 | +2.0% | $18.83 | 
+2.0% | $10.96 | 
| 2011 | $29.33 | +1.6% | $18.54 | 
+1.6% | $10.79 | 
| 2010 | $28.82 | +1.8% | $18.21 | 
+1.8% | $10.61 | 
| 2009 | $28.51 | +1.1% | $18.02 | 
+1.1% | $10.49 | 
| 2008 | $27.66 | +3.1% | $17.48 | 
+3.1% | $10.18 | 
| 2007 | $26.73 | +3.5% | $16.90 | 
+3.5% | $9.84 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $32.39 |   | $19.32 | 
  | $13.07 | 
| 2015 | $31.57 | +2.6% | $18.78 | 
+2.9% | $12.79 | 
| 2014 | $30.98 | +1.9% | $18.38 | 
+2.2% | $12.60 | 
| 2013 | $30.38 | +1.9% | $18.01 | 
+2.1% | $12.38 | 
| 2012 | $29.79 | +2.0% | $17.70 | 
+1.7% | $12.10 | 
| 2011 | $29.33 | +1.6% | $17.42 | 
+1.6% | $11.91 | 
| 2010 | $28.82 | +1.8% | $17.13 | 
+1.7% | $11.69 | 
| 2009 | $28.51 | +1.1% | $16.90 | 
+1.4% | $11.61 | 
| 2008 | $27.66 | +3.1% | $16.46 | 
+2.6% | $11.20 | 
| 2007 | $26.73 | +3.5% | $15.94 | 
+3.3% | $10.80 | 
  | 
| Reference Date: 1st Quarter 2016 |