  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $9.62 |   | $12.61 | 
  | -$2.99 | 
| 2015 | $9.36 | +2.7% | $12.27 | 
+2.7% | -$2.91 | 
| 2014 | $9.18 | +2.0% | $12.03 | 
+2.0% | -$2.85 | 
| 2013 | $9.06 | +1.3% | $11.88 | 
+1.3% | -$2.81 | 
| 2012 | $8.93 | +1.5% | $11.70 | 
+1.5% | -$2.77 | 
| 2011 | $8.81 | +1.4% | $11.54 | 
+1.4% | -$2.73 | 
| 2010 | $8.71 | +1.1% | $11.42 | 
+1.1% | -$2.70 | 
| 2009 | $8.54 | +2.0% | $11.20 | 
+2.0% | -$2.65 | 
| 2008 | $8.31 | +2.8% | $10.89 | 
+2.8% | -$2.58 | 
| 2007 | $7.98 | +4.1% | $10.46 | 
+4.1% | -$2.48 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $9.62 |   | $20.85 | 
  | -$11.23 | 
| 2015 | $9.36 | +2.7% | $20.27 | 
+2.9% | -$10.90 | 
| 2014 | $9.18 | +2.0% | $19.83 | 
+2.2% | -$10.65 | 
| 2013 | $9.06 | +1.3% | $19.43 | 
+2.1% | -$10.37 | 
| 2012 | $8.93 | +1.5% | $19.10 | 
+1.7% | -$10.17 | 
| 2011 | $8.81 | +1.4% | $18.80 | 
+1.6% | -$9.99 | 
| 2010 | $8.71 | +1.1% | $18.48 | 
+1.7% | -$9.77 | 
| 2009 | $8.54 | +2.0% | $18.23 | 
+1.4% | -$9.69 | 
| 2008 | $8.31 | +2.8% | $17.77 | 
+2.6% | -$9.45 | 
| 2007 | $7.98 | +4.1% | $17.20 | 
+3.3% | -$9.21 | 
  | 
| Reference Date: 1st Quarter 2016 |