  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $31.07 |   | $19.17 | 
  | $11.90 | 
| 2015 | $30.08 | +3.3% | $18.56 | 
+3.3% | $11.52 | 
| 2014 | $29.40 | +2.3% | $18.14 | 
+2.3% | $11.26 | 
| 2013 | $28.85 | +1.9% | $17.80 | 
+1.9% | $11.05 | 
| 2012 | $28.37 | +1.7% | $17.50 | 
+1.7% | $10.86 | 
| 2011 | $27.91 | +1.6% | $17.22 | 
+1.6% | $10.69 | 
| 2010 | $27.61 | +1.1% | $17.03 | 
+1.1% | $10.57 | 
| 2009 | $27.13 | +1.8% | $16.74 | 
+1.8% | $10.39 | 
| 2008 | $26.42 | +2.7% | $16.30 | 
+2.7% | $10.12 | 
| 2007 | $25.82 | +2.3% | $15.93 | 
+2.3% | $9.89 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $31.07 |   | $23.35 | 
  | $7.72 | 
| 2015 | $30.08 | +3.3% | $22.70 | 
+2.9% | $7.39 | 
| 2014 | $29.40 | +2.3% | $22.21 | 
+2.2% | $7.19 | 
| 2013 | $28.85 | +1.9% | $21.76 | 
+2.1% | $7.08 | 
| 2012 | $28.37 | +1.7% | $21.39 | 
+1.7% | $6.98 | 
| 2011 | $27.91 | +1.6% | $21.05 | 
+1.6% | $6.86 | 
| 2010 | $27.61 | +1.1% | $20.70 | 
+1.7% | $6.91 | 
| 2009 | $27.13 | +1.8% | $20.42 | 
+1.4% | $6.71 | 
| 2008 | $26.42 | +2.7% | $19.90 | 
+2.6% | $6.53 | 
| 2007 | $25.82 | +2.3% | $19.26 | 
+3.3% | $6.55 | 
  | 
| Reference Date: 1st Quarter 2016 |