  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $9.66 |   | $10.64 | 
  | -$0.97 | 
| 2015 | $9.40 | +2.7% | $10.36 | 
+2.7% | -$0.95 | 
| 2014 | $9.22 | +2.0% | $10.15 | 
+2.0% | -$0.93 | 
| 2013 | $9.10 | +1.3% | $10.02 | 
+1.3% | -$0.92 | 
| 2012 | $8.97 | +1.5% | $9.88 | 
+1.5% | -$0.90 | 
| 2011 | $8.84 | +1.4% | $9.74 | 
+1.4% | -$0.89 | 
| 2010 | $8.75 | +1.1% | $9.64 | 
+1.1% | -$0.88 | 
| 2009 | $8.58 | +2.0% | $9.45 | 
+2.0% | -$0.87 | 
| 2008 | $8.34 | +2.8% | $9.19 | 
+2.8% | -$0.84 | 
| 2007 | $8.02 | +4.1% | $8.83 | 
+4.1% | -$0.81 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $9.66 |   | $20.85 | 
  | -$11.19 | 
| 2015 | $9.40 | +2.7% | $20.27 | 
+2.9% | -$10.86 | 
| 2014 | $9.22 | +2.0% | $19.83 | 
+2.2% | -$10.61 | 
| 2013 | $9.10 | +1.3% | $19.43 | 
+2.1% | -$10.33 | 
| 2012 | $8.97 | +1.5% | $19.10 | 
+1.7% | -$10.13 | 
| 2011 | $8.84 | +1.4% | $18.80 | 
+1.6% | -$9.95 | 
| 2010 | $8.75 | +1.1% | $18.48 | 
+1.7% | -$9.73 | 
| 2009 | $8.58 | +2.0% | $18.23 | 
+1.4% | -$9.65 | 
| 2008 | $8.34 | +2.8% | $17.77 | 
+2.6% | -$9.42 | 
| 2007 | $8.02 | +4.1% | $17.20 | 
+3.3% | -$9.18 | 
  | 
| Reference Date: 1st Quarter 2016 |