  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $20.33 |   | $12.07 | 
  | $8.26 | 
| 2015 | $19.79 | +2.7% | $11.75 | 
+2.7% | $8.04 | 
| 2014 | $19.40 | +2.0% | $11.52 | 
+2.0% | $7.88 | 
| 2013 | $19.15 | +1.3% | $11.37 | 
+1.3% | $7.78 | 
| 2012 | $18.87 | +1.5% | $11.20 | 
+1.5% | $7.67 | 
| 2011 | $18.61 | +1.4% | $11.05 | 
+1.4% | $7.56 | 
| 2010 | $18.41 | +1.1% | $10.93 | 
+1.1% | $7.48 | 
| 2009 | $18.05 | +2.0% | $10.72 | 
+2.0% | $7.33 | 
| 2008 | $17.56 | +2.8% | $10.42 | 
+2.8% | $7.13 | 
| 2007 | $16.87 | +4.1% | $10.02 | 
+4.1% | $6.85 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $20.33 |   | $21.85 | 
  | -$1.52 | 
| 2015 | $19.79 | +2.7% | $21.24 | 
+2.9% | -$1.44 | 
| 2014 | $19.40 | +2.0% | $20.78 | 
+2.2% | -$1.38 | 
| 2013 | $19.15 | +1.3% | $20.37 | 
+2.1% | -$1.21 | 
| 2012 | $18.87 | +1.5% | $20.02 | 
+1.7% | -$1.14 | 
| 2011 | $18.61 | +1.4% | $19.70 | 
+1.6% | -$1.09 | 
| 2010 | $18.41 | +1.1% | $19.37 | 
+1.7% | -$0.95 | 
| 2009 | $18.05 | +2.0% | $19.11 | 
+1.4% | -$1.05 | 
| 2008 | $17.56 | +2.8% | $18.62 | 
+2.6% | -$1.05 | 
| 2007 | $16.87 | +4.1% | $18.02 | 
+3.3% | -$1.15 | 
  | 
| Reference Date: 1st Quarter 2016 |