  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $17.70 |   | $22.91 | 
  | -$5.21 | 
| 2015 | $17.25 | +2.6% | $22.33 | 
+2.6% | -$5.07 | 
| 2014 | $16.93 | +1.9% | $21.91 | 
+1.9% | -$4.98 | 
| 2013 | $16.60 | +1.9% | $21.49 | 
+1.9% | -$4.88 | 
| 2012 | $16.28 | +2.0% | $21.07 | 
+2.0% | -$4.79 | 
| 2011 | $16.03 | +1.6% | $20.75 | 
+1.6% | -$4.71 | 
| 2010 | $15.75 | +1.8% | $20.38 | 
+1.8% | -$4.63 | 
| 2009 | $15.58 | +1.1% | $20.16 | 
+1.1% | -$4.58 | 
| 2008 | $15.12 | +3.1% | $19.56 | 
+3.1% | -$4.44 | 
| 2007 | $14.61 | +3.5% | $18.91 | 
+3.5% | -$4.30 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $17.70 |   | $20.85 | 
  | -$3.15 | 
| 2015 | $17.25 | +2.6% | $20.27 | 
+2.9% | -$3.01 | 
| 2014 | $16.93 | +1.9% | $19.83 | 
+2.2% | -$2.90 | 
| 2013 | $16.60 | +1.9% | $19.43 | 
+2.1% | -$2.82 | 
| 2012 | $16.28 | +2.0% | $19.10 | 
+1.7% | -$2.81 | 
| 2011 | $16.03 | +1.6% | $18.80 | 
+1.6% | -$2.77 | 
| 2010 | $15.75 | +1.8% | $18.48 | 
+1.7% | -$2.73 | 
| 2009 | $15.58 | +1.1% | $18.23 | 
+1.4% | -$2.65 | 
| 2008 | $15.12 | +3.1% | $17.77 | 
+2.6% | -$2.65 | 
| 2007 | $14.61 | +3.5% | $17.20 | 
+3.3% | -$2.59 | 
  | 
| Reference Date: 1st Quarter 2016 |