  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $27.20 |   | $19.88 | 
  | $7.32 | 
| 2015 | $26.22 | +3.8% | $19.16 | 
+3.8% | $7.06 | 
| 2014 | $25.70 | +2.0% | $18.79 | 
+2.0% | $6.92 | 
| 2013 | $25.19 | +2.0% | $18.41 | 
+2.0% | $6.78 | 
| 2012 | $24.76 | +1.7% | $18.10 | 
+1.7% | $6.66 | 
| 2011 | $24.31 | +1.8% | $17.77 | 
+1.8% | $6.54 | 
| 2010 | $23.93 | +1.6% | $17.49 | 
+1.6% | $6.44 | 
| 2009 | $23.48 | +1.9% | $17.16 | 
+1.9% | $6.32 | 
| 2008 | $22.83 | +2.8% | $16.69 | 
+2.8% | $6.15 | 
| 2007 | $22.11 | +3.3% | $16.16 | 
+3.3% | $5.95 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $27.20 |   | $22.98 | 
  | $4.22 | 
| 2015 | $26.22 | +3.8% | $22.34 | 
+2.9% | $3.88 | 
| 2014 | $25.70 | +2.0% | $21.86 | 
+2.2% | $3.84 | 
| 2013 | $25.19 | +2.0% | $21.42 | 
+2.1% | $3.77 | 
| 2012 | $24.76 | +1.7% | $21.05 | 
+1.7% | $3.71 | 
| 2011 | $24.31 | +1.8% | $20.72 | 
+1.6% | $3.59 | 
| 2010 | $23.93 | +1.6% | $20.37 | 
+1.7% | $3.55 | 
| 2009 | $23.48 | +1.9% | $20.10 | 
+1.4% | $3.38 | 
| 2008 | $22.83 | +2.8% | $19.58 | 
+2.6% | $3.25 | 
| 2007 | $22.11 | +3.3% | $18.96 | 
+3.3% | $3.15 | 
  | 
| Reference Date: 1st Quarter 2016 |