  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $9.57 |   | $10.87 | 
  | -$1.30 | 
| 2015 | $9.32 | +2.7% | $10.58 | 
+2.7% | -$1.26 | 
| 2014 | $9.13 | +2.0% | $10.37 | 
+2.0% | -$1.24 | 
| 2013 | $9.01 | +1.3% | $10.24 | 
+1.3% | -$1.22 | 
| 2012 | $8.88 | +1.5% | $10.09 | 
+1.5% | -$1.20 | 
| 2011 | $8.76 | +1.4% | $9.95 | 
+1.4% | -$1.18 | 
| 2010 | $8.67 | +1.1% | $9.84 | 
+1.1% | -$1.17 | 
| 2009 | $8.50 | +2.0% | $9.65 | 
+2.0% | -$1.15 | 
| 2008 | $8.27 | +2.8% | $9.39 | 
+2.8% | -$1.12 | 
| 2007 | $7.94 | +4.1% | $9.02 | 
+4.1% | -$1.07 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $9.57 |   | $23.35 | 
  | -$13.78 | 
| 2015 | $9.32 | +2.7% | $22.70 | 
+2.9% | -$13.38 | 
| 2014 | $9.13 | +2.0% | $22.21 | 
+2.2% | -$13.08 | 
| 2013 | $9.01 | +1.3% | $21.76 | 
+2.1% | -$12.74 | 
| 2012 | $8.88 | +1.5% | $21.39 | 
+1.7% | -$12.50 | 
| 2011 | $8.76 | +1.4% | $21.05 | 
+1.6% | -$12.29 | 
| 2010 | $8.67 | +1.1% | $20.70 | 
+1.7% | -$12.03 | 
| 2009 | $8.50 | +2.0% | $20.42 | 
+1.4% | -$11.92 | 
| 2008 | $8.27 | +2.8% | $19.90 | 
+2.6% | -$11.63 | 
| 2007 | $7.94 | +4.1% | $19.26 | 
+3.3% | -$11.32 | 
  | 
| Reference Date: 1st Quarter 2016 |