  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $25.10 |   | $24.50 | 
  | $0.60 | 
| 2015 | $24.48 | +2.5% | $23.89 | 
+2.5% | $0.59 | 
| 2014 | $23.97 | +2.1% | $23.40 | 
+2.1% | $0.57 | 
| 2013 | $23.47 | +2.1% | $22.91 | 
+2.1% | $0.56 | 
| 2012 | $23.13 | +1.5% | $22.58 | 
+1.5% | $0.55 | 
| 2011 | $22.63 | +2.2% | $22.09 | 
+2.2% | $0.54 | 
| 2010 | $22.36 | +1.2% | $21.83 | 
+1.2% | $0.53 | 
| 2009 | $21.98 | +1.7% | $21.46 | 
+1.7% | $0.53 | 
| 2008 | $21.34 | +3.0% | $20.83 | 
+3.0% | $0.51 | 
| 2007 | $20.72 | +3.0% | $20.22 | 
+3.0% | $0.50 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $25.10 |   | $23.35 | 
  | $1.75 | 
| 2015 | $24.48 | +2.5% | $22.70 | 
+2.9% | $1.78 | 
| 2014 | $23.97 | +2.1% | $22.21 | 
+2.2% | $1.76 | 
| 2013 | $23.47 | +2.1% | $21.76 | 
+2.1% | $1.71 | 
| 2012 | $23.13 | +1.5% | $21.39 | 
+1.7% | $1.74 | 
| 2011 | $22.63 | +2.2% | $21.05 | 
+1.6% | $1.57 | 
| 2010 | $22.36 | +1.2% | $20.70 | 
+1.7% | $1.67 | 
| 2009 | $21.98 | +1.7% | $20.42 | 
+1.4% | $1.56 | 
| 2008 | $21.34 | +3.0% | $19.90 | 
+2.6% | $1.44 | 
| 2007 | $20.72 | +3.0% | $19.26 | 
+3.3% | $1.45 | 
  | 
| Reference Date: 1st Quarter 2016 |