  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $24.48 |   | $20.05 | 
  | $4.43 | 
| 2015 | $23.59 | +3.8% | $19.32 | 
+3.8% | $4.27 | 
| 2014 | $23.13 | +2.0% | $18.95 | 
+2.0% | $4.19 | 
| 2013 | $22.67 | +2.0% | $18.57 | 
+2.0% | $4.10 | 
| 2012 | $22.28 | +1.7% | $18.25 | 
+1.7% | $4.03 | 
| 2011 | $21.88 | +1.8% | $17.92 | 
+1.8% | $3.96 | 
| 2010 | $21.53 | +1.6% | $17.64 | 
+1.6% | $3.90 | 
| 2009 | $21.13 | +1.9% | $17.31 | 
+1.9% | $3.82 | 
| 2008 | $20.55 | +2.8% | $16.83 | 
+2.8% | $3.72 | 
| 2007 | $19.90 | +3.3% | $16.30 | 
+3.3% | $3.60 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $24.48 |   | $23.35 | 
  | $1.13 | 
| 2015 | $23.59 | +3.8% | $22.70 | 
+2.9% | $0.90 | 
| 2014 | $23.13 | +2.0% | $22.21 | 
+2.2% | $0.92 | 
| 2013 | $22.67 | +2.0% | $21.76 | 
+2.1% | $0.91 | 
| 2012 | $22.28 | +1.7% | $21.39 | 
+1.7% | $0.89 | 
| 2011 | $21.88 | +1.8% | $21.05 | 
+1.6% | $0.83 | 
| 2010 | $21.53 | +1.6% | $20.70 | 
+1.7% | $0.83 | 
| 2009 | $21.13 | +1.9% | $20.42 | 
+1.4% | $0.71 | 
| 2008 | $20.55 | +2.8% | $19.90 | 
+2.6% | $0.65 | 
| 2007 | $19.90 | +3.3% | $19.26 | 
+3.3% | $0.63 | 
  | 
| Reference Date: 1st Quarter 2016 |