  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $24.89 |   | $23.15 | 
  | $1.74 | 
| 2015 | $24.27 | +2.5% | $22.57 | 
+2.5% | $1.70 | 
| 2014 | $23.77 | +2.1% | $22.11 | 
+2.1% | $1.66 | 
| 2013 | $23.27 | +2.1% | $21.65 | 
+2.1% | $1.63 | 
| 2012 | $22.94 | +1.5% | $21.33 | 
+1.5% | $1.60 | 
| 2011 | $22.44 | +2.2% | $20.87 | 
+2.2% | $1.57 | 
| 2010 | $22.18 | +1.2% | $20.63 | 
+1.2% | $1.55 | 
| 2009 | $21.80 | +1.7% | $20.27 | 
+1.7% | $1.52 | 
| 2008 | $21.16 | +3.0% | $19.68 | 
+3.0% | $1.48 | 
| 2007 | $20.54 | +3.0% | $19.11 | 
+3.0% | $1.44 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $24.89 |   | $20.53 | 
  | $4.36 | 
| 2015 | $24.27 | +2.5% | $19.96 | 
+2.9% | $4.32 | 
| 2014 | $23.77 | +2.1% | $19.53 | 
+2.2% | $4.24 | 
| 2013 | $23.27 | +2.1% | $19.14 | 
+2.1% | $4.14 | 
| 2012 | $22.94 | +1.5% | $18.81 | 
+1.7% | $4.13 | 
| 2011 | $22.44 | +2.2% | $18.51 | 
+1.6% | $3.93 | 
| 2010 | $22.18 | +1.2% | $18.20 | 
+1.7% | $3.98 | 
| 2009 | $21.80 | +1.7% | $17.95 | 
+1.4% | $3.85 | 
| 2008 | $21.16 | +3.0% | $17.49 | 
+2.6% | $3.67 | 
| 2007 | $20.54 | +3.0% | $16.94 | 
+3.3% | $3.61 | 
  | 
| Reference Date: 1st Quarter 2016 |