  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $21.70 |   | $17.86 | 
  | $3.84 | 
| 2015 | $21.01 | +3.3% | $17.29 | 
+3.3% | $3.72 | 
| 2014 | $20.54 | +2.3% | $16.90 | 
+2.3% | $3.63 | 
| 2013 | $20.15 | +1.9% | $16.58 | 
+1.9% | $3.57 | 
| 2012 | $19.81 | +1.7% | $16.31 | 
+1.7% | $3.51 | 
| 2011 | $19.49 | +1.6% | $16.04 | 
+1.6% | $3.45 | 
| 2010 | $19.28 | +1.1% | $15.87 | 
+1.1% | $3.41 | 
| 2009 | $18.95 | +1.8% | $15.59 | 
+1.8% | $3.35 | 
| 2008 | $18.45 | +2.7% | $15.19 | 
+2.7% | $3.27 | 
| 2007 | $18.03 | +2.3% | $14.84 | 
+2.3% | $3.19 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $21.70 |   | $20.85 | 
  | $0.85 | 
| 2015 | $21.01 | +3.3% | $20.27 | 
+2.9% | $0.75 | 
| 2014 | $20.54 | +2.3% | $19.83 | 
+2.2% | $0.70 | 
| 2013 | $20.15 | +1.9% | $19.43 | 
+2.1% | $0.71 | 
| 2012 | $19.81 | +1.7% | $19.10 | 
+1.7% | $0.71 | 
| 2011 | $19.49 | +1.6% | $18.80 | 
+1.6% | $0.69 | 
| 2010 | $19.28 | +1.1% | $18.48 | 
+1.7% | $0.80 | 
| 2009 | $18.95 | +1.8% | $18.23 | 
+1.4% | $0.71 | 
| 2008 | $18.45 | +2.7% | $17.77 | 
+2.6% | $0.69 | 
| 2007 | $18.03 | +2.3% | $17.20 | 
+3.3% | $0.83 | 
  | 
| Reference Date: 1st Quarter 2016 |