  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $21.76 |   | $32.25 | 
  | -$10.49 | 
| 2015 | $21.01 | +3.6% | $31.13 | 
+3.6% | -$10.12 | 
| 2014 | $20.51 | +2.4% | $30.40 | 
+2.4% | -$9.88 | 
| 2013 | $20.01 | +2.5% | $29.66 | 
+2.5% | -$9.64 | 
| 2012 | $19.69 | +1.7% | $29.18 | 
+1.7% | -$9.49 | 
| 2011 | $19.38 | +1.6% | $28.72 | 
+1.6% | -$9.34 | 
| 2010 | $18.97 | +2.2% | $28.11 | 
+2.2% | -$9.14 | 
| 2009 | $18.83 | +.7% | $27.91 | 
+.7% | -$9.07 | 
| 2008 | $18.25 | +3.2% | $27.05 | 
+3.2% | -$8.79 | 
| 2007 | $17.65 | +3.4% | $26.16 | 
+3.4% | -$8.50 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $21.76 |   | $18.90 | 
  | $2.86 | 
| 2015 | $21.01 | +3.6% | $18.37 | 
+2.9% | $2.64 | 
| 2014 | $20.51 | +2.4% | $17.98 | 
+2.2% | $2.53 | 
| 2013 | $20.01 | +2.5% | $17.62 | 
+2.1% | $2.40 | 
| 2012 | $19.69 | +1.7% | $17.31 | 
+1.7% | $2.37 | 
| 2011 | $19.38 | +1.6% | $17.04 | 
+1.6% | $2.34 | 
| 2010 | $18.97 | +2.2% | $16.75 | 
+1.7% | $2.21 | 
| 2009 | $18.83 | +.7% | $16.53 | 
+1.4% | $2.30 | 
| 2008 | $18.25 | +3.2% | $16.11 | 
+2.6% | $2.15 | 
| 2007 | $17.65 | +3.4% | $15.59 | 
+3.3% | $2.06 | 
  | 
| Reference Date: 1st Quarter 2016 |