  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $17.46 |   | $35.50 | 
  | -$18.04 | 
| 2015 | $17.02 | +2.6% | $34.60 | 
+2.6% | -$17.58 | 
| 2014 | $16.70 | +1.9% | $33.95 | 
+1.9% | -$17.25 | 
| 2013 | $16.38 | +1.9% | $33.30 | 
+1.9% | -$16.92 | 
| 2012 | $16.06 | +2.0% | $32.65 | 
+2.0% | -$16.59 | 
| 2011 | $15.81 | +1.6% | $32.15 | 
+1.6% | -$16.33 | 
| 2010 | $15.53 | +1.8% | $31.58 | 
+1.8% | -$16.04 | 
| 2009 | $15.37 | +1.1% | $31.25 | 
+1.1% | -$15.87 | 
| 2008 | $14.91 | +3.1% | $30.32 | 
+3.1% | -$15.40 | 
| 2007 | $14.41 | +3.5% | $29.30 | 
+3.5% | -$14.89 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $17.46 |   | $20.85 | 
  | -$3.39 | 
| 2015 | $17.02 | +2.6% | $20.27 | 
+2.9% | -$3.25 | 
| 2014 | $16.70 | +1.9% | $19.83 | 
+2.2% | -$3.13 | 
| 2013 | $16.38 | +1.9% | $19.43 | 
+2.1% | -$3.05 | 
| 2012 | $16.06 | +2.0% | $19.10 | 
+1.7% | -$3.03 | 
| 2011 | $15.81 | +1.6% | $18.80 | 
+1.6% | -$2.98 | 
| 2010 | $15.53 | +1.8% | $18.48 | 
+1.7% | -$2.94 | 
| 2009 | $15.37 | +1.1% | $18.23 | 
+1.4% | -$2.86 | 
| 2008 | $14.91 | +3.1% | $17.77 | 
+2.6% | -$2.85 | 
| 2007 | $14.41 | +3.5% | $17.20 | 
+3.3% | -$2.78 | 
  | 
| Reference Date: 1st Quarter 2016 |