  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $23.37 |   | $24.44 | 
  | -$1.07 | 
| 2015 | $22.79 | +2.5% | $23.83 | 
+2.5% | -$1.04 | 
| 2014 | $22.32 | +2.1% | $23.34 | 
+2.1% | -$1.02 | 
| 2013 | $21.85 | +2.1% | $22.85 | 
+2.1% | -$1.00 | 
| 2012 | $21.53 | +1.5% | $22.52 | 
+1.5% | -$0.98 | 
| 2011 | $21.07 | +2.2% | $22.03 | 
+2.2% | -$0.96 | 
| 2010 | $20.82 | +1.2% | $21.78 | 
+1.2% | -$0.95 | 
| 2009 | $20.47 | +1.7% | $21.40 | 
+1.7% | -$0.93 | 
| 2008 | $19.87 | +3.0% | $20.78 | 
+3.0% | -$0.90 | 
| 2007 | $19.29 | +3.0% | $20.17 | 
+3.0% | -$0.88 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $23.37 |   | $20.85 | 
  | $2.52 | 
| 2015 | $22.79 | +2.5% | $20.27 | 
+2.9% | $2.52 | 
| 2014 | $22.32 | +2.1% | $19.83 | 
+2.2% | $2.49 | 
| 2013 | $21.85 | +2.1% | $19.43 | 
+2.1% | $2.42 | 
| 2012 | $21.53 | +1.5% | $19.10 | 
+1.7% | $2.43 | 
| 2011 | $21.07 | +2.2% | $18.80 | 
+1.6% | $2.27 | 
| 2010 | $20.82 | +1.2% | $18.48 | 
+1.7% | $2.34 | 
| 2009 | $20.47 | +1.7% | $18.23 | 
+1.4% | $2.23 | 
| 2008 | $19.87 | +3.0% | $17.77 | 
+2.6% | $2.10 | 
| 2007 | $19.29 | +3.0% | $17.20 | 
+3.3% | $2.09 | 
  | 
| Reference Date: 1st Quarter 2016 |