  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $9.59 |   | $12.36 | 
  | -$2.77 | 
| 2015 | $9.33 | +2.7% | $12.03 | 
+2.7% | -$2.69 | 
| 2014 | $9.15 | +2.0% | $11.79 | 
+2.0% | -$2.64 | 
| 2013 | $9.03 | +1.3% | $11.64 | 
+1.3% | -$2.60 | 
| 2012 | $8.90 | +1.5% | $11.47 | 
+1.5% | -$2.57 | 
| 2011 | $8.78 | +1.4% | $11.31 | 
+1.4% | -$2.53 | 
| 2010 | $8.69 | +1.1% | $11.19 | 
+1.1% | -$2.50 | 
| 2009 | $8.51 | +2.0% | $10.97 | 
+2.0% | -$2.45 | 
| 2008 | $8.28 | +2.8% | $10.68 | 
+2.8% | -$2.39 | 
| 2007 | $7.96 | +4.1% | $10.26 | 
+4.1% | -$2.29 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $9.59 |   | $19.32 | 
  | -$9.73 | 
| 2015 | $9.33 | +2.7% | $18.78 | 
+2.9% | -$9.44 | 
| 2014 | $9.15 | +2.0% | $18.38 | 
+2.2% | -$9.22 | 
| 2013 | $9.03 | +1.3% | $18.01 | 
+2.1% | -$8.97 | 
| 2012 | $8.90 | +1.5% | $17.70 | 
+1.7% | -$8.79 | 
| 2011 | $8.78 | +1.4% | $17.42 | 
+1.6% | -$8.64 | 
| 2010 | $8.69 | +1.1% | $17.13 | 
+1.7% | -$8.44 | 
| 2009 | $8.51 | +2.0% | $16.90 | 
+1.4% | -$8.38 | 
| 2008 | $8.28 | +2.8% | $16.46 | 
+2.6% | -$8.17 | 
| 2007 | $7.96 | +4.1% | $15.94 | 
+3.3% | -$7.97 | 
  | 
| Reference Date: 1st Quarter 2016 |