  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $30.41 |   | $18.47 | 
  | $11.94 | 
| 2015 | $29.31 | +3.8% | $17.80 | 
+3.8% | $11.51 | 
| 2014 | $28.74 | +2.0% | $17.45 | 
+2.0% | $11.28 | 
| 2013 | $28.16 | +2.0% | $17.10 | 
+2.0% | $11.06 | 
| 2012 | $27.68 | +1.7% | $16.81 | 
+1.7% | $10.87 | 
| 2011 | $27.18 | +1.8% | $16.51 | 
+1.8% | $10.67 | 
| 2010 | $26.75 | +1.6% | $16.25 | 
+1.6% | $10.50 | 
| 2009 | $26.25 | +1.9% | $15.94 | 
+1.9% | $10.31 | 
| 2008 | $25.53 | +2.8% | $15.51 | 
+2.8% | $10.02 | 
| 2007 | $24.72 | +3.3% | $15.01 | 
+3.3% | $9.70 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $30.41 |   | $20.53 | 
  | $9.88 | 
| 2015 | $29.31 | +3.8% | $19.96 | 
+2.9% | $9.35 | 
| 2014 | $28.74 | +2.0% | $19.53 | 
+2.2% | $9.21 | 
| 2013 | $28.16 | +2.0% | $19.14 | 
+2.1% | $9.03 | 
| 2012 | $27.68 | +1.7% | $18.81 | 
+1.7% | $8.88 | 
| 2011 | $27.18 | +1.8% | $18.51 | 
+1.6% | $8.67 | 
| 2010 | $26.75 | +1.6% | $18.20 | 
+1.7% | $8.55 | 
| 2009 | $26.25 | +1.9% | $17.95 | 
+1.4% | $8.29 | 
| 2008 | $25.53 | +2.8% | $17.49 | 
+2.6% | $8.04 | 
| 2007 | $24.72 | +3.3% | $16.94 | 
+3.3% | $7.78 | 
  | 
| Reference Date: 1st Quarter 2016 |