  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $24.34 |   | $20.05 | 
  | $4.29 | 
| 2015 | $23.46 | +3.8% | $19.32 | 
+3.8% | $4.13 | 
| 2014 | $23.00 | +2.0% | $18.95 | 
+2.0% | $4.05 | 
| 2013 | $22.54 | +2.0% | $18.57 | 
+2.0% | $3.97 | 
| 2012 | $22.16 | +1.7% | $18.25 | 
+1.7% | $3.91 | 
| 2011 | $21.75 | +1.8% | $17.92 | 
+1.8% | $3.83 | 
| 2010 | $21.41 | +1.6% | $17.64 | 
+1.6% | $3.77 | 
| 2009 | $21.01 | +1.9% | $17.31 | 
+1.9% | $3.70 | 
| 2008 | $20.43 | +2.8% | $16.83 | 
+2.8% | $3.60 | 
| 2007 | $19.78 | +3.3% | $16.30 | 
+3.3% | $3.49 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $24.34 |   | $23.35 | 
  | $0.99 | 
| 2015 | $23.46 | +3.8% | $22.70 | 
+2.9% | $0.76 | 
| 2014 | $23.00 | +2.0% | $22.21 | 
+2.2% | $0.79 | 
| 2013 | $22.54 | +2.0% | $21.76 | 
+2.1% | $0.78 | 
| 2012 | $22.16 | +1.7% | $21.39 | 
+1.7% | $0.77 | 
| 2011 | $21.75 | +1.8% | $21.05 | 
+1.6% | $0.70 | 
| 2010 | $21.41 | +1.6% | $20.70 | 
+1.7% | $0.71 | 
| 2009 | $21.01 | +1.9% | $20.42 | 
+1.4% | $0.59 | 
| 2008 | $20.43 | +2.8% | $19.90 | 
+2.6% | $0.54 | 
| 2007 | $19.78 | +3.3% | $19.26 | 
+3.3% | $0.52 | 
  | 
| Reference Date: 1st Quarter 2016 |