  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $23.55 |   | $22.91 | 
  | $0.64 | 
| 2015 | $22.95 | +2.6% | $22.33 | 
+2.6% | $0.62 | 
| 2014 | $22.52 | +1.9% | $21.91 | 
+1.9% | $0.61 | 
| 2013 | $22.09 | +1.9% | $21.49 | 
+1.9% | $0.60 | 
| 2012 | $21.66 | +2.0% | $21.07 | 
+2.0% | $0.59 | 
| 2011 | $21.33 | +1.6% | $20.75 | 
+1.6% | $0.58 | 
| 2010 | $20.95 | +1.8% | $20.38 | 
+1.8% | $0.57 | 
| 2009 | $20.73 | +1.1% | $20.16 | 
+1.1% | $0.56 | 
| 2008 | $20.11 | +3.1% | $19.56 | 
+3.1% | $0.55 | 
| 2007 | $19.44 | +3.5% | $18.91 | 
+3.5% | $0.53 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $23.55 |   | $20.85 | 
  | $2.70 | 
| 2015 | $22.95 | +2.6% | $20.27 | 
+2.9% | $2.69 | 
| 2014 | $22.52 | +1.9% | $19.83 | 
+2.2% | $2.69 | 
| 2013 | $22.09 | +1.9% | $19.43 | 
+2.1% | $2.66 | 
| 2012 | $21.66 | +2.0% | $19.10 | 
+1.7% | $2.56 | 
| 2011 | $21.33 | +1.6% | $18.80 | 
+1.6% | $2.53 | 
| 2010 | $20.95 | +1.8% | $18.48 | 
+1.7% | $2.47 | 
| 2009 | $20.73 | +1.1% | $18.23 | 
+1.4% | $2.49 | 
| 2008 | $20.11 | +3.1% | $17.77 | 
+2.6% | $2.34 | 
| 2007 | $19.44 | +3.5% | $17.20 | 
+3.3% | $2.24 | 
  | 
| Reference Date: 1st Quarter 2016 |