  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $12.54 |   | $15.20 | 
  | -$2.66 | 
| 2015 | $12.21 | +2.7% | $14.80 | 
+2.7% | -$2.58 | 
| 2014 | $11.96 | +2.0% | $14.50 | 
+2.0% | -$2.53 | 
| 2013 | $11.81 | +1.3% | $14.32 | 
+1.3% | -$2.50 | 
| 2012 | $11.64 | +1.5% | $14.11 | 
+1.5% | -$2.46 | 
| 2011 | $11.48 | +1.4% | $13.91 | 
+1.4% | -$2.43 | 
| 2010 | $11.36 | +1.1% | $13.77 | 
+1.1% | -$2.40 | 
| 2009 | $11.13 | +2.0% | $13.50 | 
+2.0% | -$2.36 | 
| 2008 | $10.83 | +2.8% | $13.13 | 
+2.8% | -$2.29 | 
| 2007 | $10.41 | +4.1% | $12.61 | 
+4.1% | -$2.20 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $12.54 |   | $21.85 | 
  | -$9.31 | 
| 2015 | $12.21 | +2.7% | $21.24 | 
+2.9% | -$9.03 | 
| 2014 | $11.96 | +2.0% | $20.78 | 
+2.2% | -$8.82 | 
| 2013 | $11.81 | +1.3% | $20.37 | 
+2.1% | -$8.55 | 
| 2012 | $11.64 | +1.5% | $20.02 | 
+1.7% | -$8.37 | 
| 2011 | $11.48 | +1.4% | $19.70 | 
+1.6% | -$8.22 | 
| 2010 | $11.36 | +1.1% | $19.37 | 
+1.7% | -$8.01 | 
| 2009 | $11.13 | +2.0% | $19.11 | 
+1.4% | -$7.97 | 
| 2008 | $10.83 | +2.8% | $18.62 | 
+2.6% | -$7.78 | 
| 2007 | $10.41 | +4.1% | $18.02 | 
+3.3% | -$7.61 | 
  | 
| Reference Date: 1st Quarter 2016 |