  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $17.59 |   | $19.21 | 
  | -$1.62 | 
| 2015 | $17.03 | +3.3% | $18.60 | 
+3.3% | -$1.56 | 
| 2014 | $16.65 | +2.3% | $18.18 | 
+2.3% | -$1.53 | 
| 2013 | $16.33 | +1.9% | $17.84 | 
+1.9% | -$1.50 | 
| 2012 | $16.06 | +1.7% | $17.54 | 
+1.7% | -$1.47 | 
| 2011 | $15.80 | +1.6% | $17.26 | 
+1.6% | -$1.45 | 
| 2010 | $15.63 | +1.1% | $17.07 | 
+1.1% | -$1.43 | 
| 2009 | $15.36 | +1.8% | $16.77 | 
+1.8% | -$1.41 | 
| 2008 | $14.96 | +2.7% | $16.34 | 
+2.7% | -$1.37 | 
| 2007 | $14.62 | +2.3% | $15.96 | 
+2.3% | -$1.34 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $17.59 |   | $21.85 | 
  | -$4.26 | 
| 2015 | $17.03 | +3.3% | $21.24 | 
+2.9% | -$4.20 | 
| 2014 | $16.65 | +2.3% | $20.78 | 
+2.2% | -$4.13 | 
| 2013 | $16.33 | +1.9% | $20.37 | 
+2.1% | -$4.03 | 
| 2012 | $16.06 | +1.7% | $20.02 | 
+1.7% | -$3.95 | 
| 2011 | $15.80 | +1.6% | $19.70 | 
+1.6% | -$3.89 | 
| 2010 | $15.63 | +1.1% | $19.37 | 
+1.7% | -$3.73 | 
| 2009 | $15.36 | +1.8% | $19.11 | 
+1.4% | -$3.74 | 
| 2008 | $14.96 | +2.7% | $18.62 | 
+2.6% | -$3.66 | 
| 2007 | $14.62 | +2.3% | $18.02 | 
+3.3% | -$3.40 | 
  | 
| Reference Date: 1st Quarter 2016 |