  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $21.25 |   | $22.47 | 
  | -$1.22 | 
| 2015 | $20.72 | +2.5% | $21.91 | 
+2.5% | -$1.18 | 
| 2014 | $20.30 | +2.1% | $21.46 | 
+2.1% | -$1.16 | 
| 2013 | $19.87 | +2.1% | $21.01 | 
+2.1% | -$1.14 | 
| 2012 | $19.58 | +1.5% | $20.71 | 
+1.5% | -$1.12 | 
| 2011 | $19.16 | +2.2% | $20.26 | 
+2.2% | -$1.09 | 
| 2010 | $18.93 | +1.2% | $20.02 | 
+1.2% | -$1.08 | 
| 2009 | $18.61 | +1.7% | $19.68 | 
+1.7% | -$1.06 | 
| 2008 | $18.07 | +3.0% | $19.10 | 
+3.0% | -$1.03 | 
| 2007 | $17.54 | +3.0% | $18.54 | 
+3.0% | -$1.00 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $21.25 |   | $19.32 | 
  | $1.93 | 
| 2015 | $20.72 | +2.5% | $18.78 | 
+2.9% | $1.94 | 
| 2014 | $20.30 | +2.1% | $18.38 | 
+2.2% | $1.92 | 
| 2013 | $19.87 | +2.1% | $18.01 | 
+2.1% | $1.86 | 
| 2012 | $19.58 | +1.5% | $17.70 | 
+1.7% | $1.88 | 
| 2011 | $19.16 | +2.2% | $17.42 | 
+1.6% | $1.74 | 
| 2010 | $18.93 | +1.2% | $17.13 | 
+1.7% | $1.81 | 
| 2009 | $18.61 | +1.7% | $16.90 | 
+1.4% | $1.72 | 
| 2008 | $18.07 | +3.0% | $16.46 | 
+2.6% | $1.60 | 
| 2007 | $17.54 | +3.0% | $15.94 | 
+3.3% | $1.60 | 
  | 
| Reference Date: 1st Quarter 2016 |