  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $20.93 |   | $25.26 | 
  | -$4.33 | 
| 2015 | $20.40 | +2.6% | $24.62 | 
+2.6% | -$4.22 | 
| 2014 | $20.02 | +1.9% | $24.16 | 
+1.9% | -$4.14 | 
| 2013 | $19.63 | +1.9% | $23.70 | 
+1.9% | -$4.06 | 
| 2012 | $19.25 | +2.0% | $23.24 | 
+2.0% | -$3.98 | 
| 2011 | $18.95 | +1.6% | $22.87 | 
+1.6% | -$3.92 | 
| 2010 | $18.62 | +1.8% | $22.47 | 
+1.8% | -$3.85 | 
| 2009 | $18.42 | +1.1% | $22.23 | 
+1.1% | -$3.81 | 
| 2008 | $17.87 | +3.1% | $21.57 | 
+3.1% | -$3.69 | 
| 2007 | $17.28 | +3.5% | $20.85 | 
+3.5% | -$3.57 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $20.93 |   | $21.85 | 
  | -$0.92 | 
| 2015 | $20.40 | +2.6% | $21.24 | 
+2.9% | -$0.84 | 
| 2014 | $20.02 | +1.9% | $20.78 | 
+2.2% | -$0.76 | 
| 2013 | $19.63 | +1.9% | $20.37 | 
+2.1% | -$0.73 | 
| 2012 | $19.25 | +2.0% | $20.02 | 
+1.7% | -$0.76 | 
| 2011 | $18.95 | +1.6% | $19.70 | 
+1.6% | -$0.74 | 
| 2010 | $18.62 | +1.8% | $19.37 | 
+1.7% | -$0.74 | 
| 2009 | $18.42 | +1.1% | $19.11 | 
+1.4% | -$0.68 | 
| 2008 | $17.87 | +3.1% | $18.62 | 
+2.6% | -$0.74 | 
| 2007 | $17.28 | +3.5% | $18.02 | 
+3.3% | -$0.74 | 
  | 
| Reference Date: 1st Quarter 2016 |