  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $16.48 |   | $22.91 | 
  | -$6.43 | 
| 2015 | $16.06 | +2.6% | $22.33 | 
+2.6% | -$6.26 | 
| 2014 | $15.76 | +1.9% | $21.91 | 
+1.9% | -$6.14 | 
| 2013 | $15.46 | +1.9% | $21.49 | 
+1.9% | -$6.03 | 
| 2012 | $15.16 | +2.0% | $21.07 | 
+2.0% | -$5.91 | 
| 2011 | $14.92 | +1.6% | $20.75 | 
+1.6% | -$5.82 | 
| 2010 | $14.66 | +1.8% | $20.38 | 
+1.8% | -$5.72 | 
| 2009 | $14.51 | +1.1% | $20.16 | 
+1.1% | -$5.65 | 
| 2008 | $14.07 | +3.1% | $19.56 | 
+3.1% | -$5.49 | 
| 2007 | $13.60 | +3.5% | $18.91 | 
+3.5% | -$5.30 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $16.48 |   | $20.85 | 
  | -$4.37 | 
| 2015 | $16.06 | +2.6% | $20.27 | 
+2.9% | -$4.20 | 
| 2014 | $15.76 | +1.9% | $19.83 | 
+2.2% | -$4.07 | 
| 2013 | $15.46 | +1.9% | $19.43 | 
+2.1% | -$3.97 | 
| 2012 | $15.16 | +2.0% | $19.10 | 
+1.7% | -$3.94 | 
| 2011 | $14.92 | +1.6% | $18.80 | 
+1.6% | -$3.87 | 
| 2010 | $14.66 | +1.8% | $18.48 | 
+1.7% | -$3.82 | 
| 2009 | $14.51 | +1.1% | $18.23 | 
+1.4% | -$3.72 | 
| 2008 | $14.07 | +3.1% | $17.77 | 
+2.6% | -$3.69 | 
| 2007 | $13.60 | +3.5% | $17.20 | 
+3.3% | -$3.59 | 
  | 
| Reference Date: 1st Quarter 2016 |