  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $27.77 |   | $23.15 | 
  | $4.62 | 
| 2015 | $27.08 | +2.5% | $22.57 | 
+2.5% | $4.51 | 
| 2014 | $26.52 | +2.1% | $22.11 | 
+2.1% | $4.41 | 
| 2013 | $25.97 | +2.1% | $21.65 | 
+2.1% | $4.32 | 
| 2012 | $25.59 | +1.5% | $21.33 | 
+1.5% | $4.26 | 
| 2011 | $25.03 | +2.2% | $20.87 | 
+2.2% | $4.16 | 
| 2010 | $24.74 | +1.2% | $20.63 | 
+1.2% | $4.12 | 
| 2009 | $24.32 | +1.7% | $20.27 | 
+1.7% | $4.05 | 
| 2008 | $23.61 | +3.0% | $19.68 | 
+3.0% | $3.93 | 
| 2007 | $22.92 | +3.0% | $19.11 | 
+3.0% | $3.81 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $27.77 |   | $20.53 | 
  | $7.24 | 
| 2015 | $27.08 | +2.5% | $19.96 | 
+2.9% | $7.12 | 
| 2014 | $26.52 | +2.1% | $19.53 | 
+2.2% | $6.99 | 
| 2013 | $25.97 | +2.1% | $19.14 | 
+2.1% | $6.83 | 
| 2012 | $25.59 | +1.5% | $18.81 | 
+1.7% | $6.78 | 
| 2011 | $25.03 | +2.2% | $18.51 | 
+1.6% | $6.52 | 
| 2010 | $24.74 | +1.2% | $18.20 | 
+1.7% | $6.54 | 
| 2009 | $24.32 | +1.7% | $17.95 | 
+1.4% | $6.37 | 
| 2008 | $23.61 | +3.0% | $17.49 | 
+2.6% | $6.11 | 
| 2007 | $22.92 | +3.0% | $16.94 | 
+3.3% | $5.98 | 
  | 
| Reference Date: 1st Quarter 2016 |