  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $24.74 |   | $22.76 | 
  | $1.98 | 
| 2015 | $24.11 | +2.6% | $22.18 | 
+2.6% | $1.93 | 
| 2014 | $23.66 | +1.9% | $21.77 | 
+1.9% | $1.89 | 
| 2013 | $23.21 | +1.9% | $21.35 | 
+1.9% | $1.86 | 
| 2012 | $22.76 | +2.0% | $20.94 | 
+2.0% | $1.82 | 
| 2011 | $22.40 | +1.6% | $20.61 | 
+1.6% | $1.79 | 
| 2010 | $22.01 | +1.8% | $20.25 | 
+1.8% | $1.76 | 
| 2009 | $21.78 | +1.1% | $20.03 | 
+1.1% | $1.74 | 
| 2008 | $21.13 | +3.1% | $19.44 | 
+3.1% | $1.69 | 
| 2007 | $20.42 | +3.5% | $18.79 | 
+3.5% | $1.63 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $24.74 |   | $20.85 | 
  | $3.89 | 
| 2015 | $24.11 | +2.6% | $20.27 | 
+2.9% | $3.85 | 
| 2014 | $23.66 | +1.9% | $19.83 | 
+2.2% | $3.83 | 
| 2013 | $23.21 | +1.9% | $19.43 | 
+2.1% | $3.78 | 
| 2012 | $22.76 | +2.0% | $19.10 | 
+1.7% | $3.66 | 
| 2011 | $22.40 | +1.6% | $18.80 | 
+1.6% | $3.60 | 
| 2010 | $22.01 | +1.8% | $18.48 | 
+1.7% | $3.53 | 
| 2009 | $21.78 | +1.1% | $18.23 | 
+1.4% | $3.54 | 
| 2008 | $21.13 | +3.1% | $17.77 | 
+2.6% | $3.36 | 
| 2007 | $20.42 | +3.5% | $17.20 | 
+3.3% | $3.22 | 
  | 
| Reference Date: 1st Quarter 2016 |