  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $16.14 |   | $20.05 | 
  | -$3.91 | 
| 2015 | $15.56 | +3.8% | $19.32 | 
+3.8% | -$3.76 | 
| 2014 | $15.25 | +2.0% | $18.95 | 
+2.0% | -$3.69 | 
| 2013 | $14.95 | +2.0% | $18.57 | 
+2.0% | -$3.62 | 
| 2012 | $14.69 | +1.7% | $18.25 | 
+1.7% | -$3.55 | 
| 2011 | $14.43 | +1.8% | $17.92 | 
+1.8% | -$3.49 | 
| 2010 | $14.20 | +1.6% | $17.64 | 
+1.6% | -$3.43 | 
| 2009 | $13.93 | +1.9% | $17.31 | 
+1.9% | -$3.37 | 
| 2008 | $13.55 | +2.8% | $16.83 | 
+2.8% | -$3.28 | 
| 2007 | $13.12 | +3.3% | $16.30 | 
+3.3% | -$3.17 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $16.14 |   | $23.35 | 
  | -$7.21 | 
| 2015 | $15.56 | +3.8% | $22.70 | 
+2.9% | -$7.14 | 
| 2014 | $15.25 | +2.0% | $22.21 | 
+2.2% | -$6.96 | 
| 2013 | $14.95 | +2.0% | $21.76 | 
+2.1% | -$6.81 | 
| 2012 | $14.69 | +1.7% | $21.39 | 
+1.7% | -$6.69 | 
| 2011 | $14.43 | +1.8% | $21.05 | 
+1.6% | -$6.62 | 
| 2010 | $14.20 | +1.6% | $20.70 | 
+1.7% | -$6.50 | 
| 2009 | $13.93 | +1.9% | $20.42 | 
+1.4% | -$6.48 | 
| 2008 | $13.55 | +2.8% | $19.90 | 
+2.6% | -$6.34 | 
| 2007 | $13.12 | +3.3% | $19.26 | 
+3.3% | -$6.14 | 
  | 
| Reference Date: 1st Quarter 2016 |