  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $9.50 |   | $12.07 | 
  | -$2.57 | 
| 2015 | $9.25 | +2.7% | $11.75 | 
+2.7% | -$2.50 | 
| 2014 | $9.06 | +2.0% | $11.52 | 
+2.0% | -$2.45 | 
| 2013 | $8.95 | +1.3% | $11.37 | 
+1.3% | -$2.42 | 
| 2012 | $8.82 | +1.5% | $11.20 | 
+1.5% | -$2.38 | 
| 2011 | $8.70 | +1.4% | $11.05 | 
+1.4% | -$2.35 | 
| 2010 | $8.60 | +1.1% | $10.93 | 
+1.1% | -$2.32 | 
| 2009 | $8.44 | +2.0% | $10.72 | 
+2.0% | -$2.28 | 
| 2008 | $8.21 | +2.8% | $10.42 | 
+2.8% | -$2.21 | 
| 2007 | $7.88 | +4.1% | $10.02 | 
+4.1% | -$2.13 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $9.50 |   | $21.85 | 
  | -$12.35 | 
| 2015 | $9.25 | +2.7% | $21.24 | 
+2.9% | -$11.99 | 
| 2014 | $9.06 | +2.0% | $20.78 | 
+2.2% | -$11.72 | 
| 2013 | $8.95 | +1.3% | $20.37 | 
+2.1% | -$11.41 | 
| 2012 | $8.82 | +1.5% | $20.02 | 
+1.7% | -$11.19 | 
| 2011 | $8.70 | +1.4% | $19.70 | 
+1.6% | -$11.00 | 
| 2010 | $8.60 | +1.1% | $19.37 | 
+1.7% | -$10.76 | 
| 2009 | $8.44 | +2.0% | $19.11 | 
+1.4% | -$10.67 | 
| 2008 | $8.21 | +2.8% | $18.62 | 
+2.6% | -$10.41 | 
| 2007 | $7.88 | +4.1% | $18.02 | 
+3.3% | -$10.14 | 
  | 
| Reference Date: 1st Quarter 2016 |