  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $17.81 |   | $28.62 | 
  | -$10.81 | 
| 2015 | $17.36 | +2.6% | $27.89 | 
+2.6% | -$10.53 | 
| 2014 | $17.03 | +1.9% | $27.37 | 
+1.9% | -$10.33 | 
| 2013 | $16.71 | +1.9% | $26.85 | 
+1.9% | -$10.14 | 
| 2012 | $16.38 | +2.0% | $26.33 | 
+2.0% | -$9.94 | 
| 2011 | $16.13 | +1.6% | $25.92 | 
+1.6% | -$9.78 | 
| 2010 | $15.85 | +1.8% | $25.46 | 
+1.8% | -$9.61 | 
| 2009 | $15.68 | +1.1% | $25.19 | 
+1.1% | -$9.51 | 
| 2008 | $15.21 | +3.1% | $24.44 | 
+3.1% | -$9.23 | 
| 2007 | $14.70 | +3.5% | $23.62 | 
+3.5% | -$8.92 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $17.81 |   | $20.85 | 
  | -$3.04 | 
| 2015 | $17.36 | +2.6% | $20.27 | 
+2.9% | -$2.90 | 
| 2014 | $17.03 | +1.9% | $19.83 | 
+2.2% | -$2.80 | 
| 2013 | $16.71 | +1.9% | $19.43 | 
+2.1% | -$2.72 | 
| 2012 | $16.38 | +2.0% | $19.10 | 
+1.7% | -$2.71 | 
| 2011 | $16.13 | +1.6% | $18.80 | 
+1.6% | -$2.67 | 
| 2010 | $15.85 | +1.8% | $18.48 | 
+1.7% | -$2.63 | 
| 2009 | $15.68 | +1.1% | $18.23 | 
+1.4% | -$2.55 | 
| 2008 | $15.21 | +3.1% | $17.77 | 
+2.6% | -$2.55 | 
| 2007 | $14.70 | +3.5% | $17.20 | 
+3.3% | -$2.49 | 
  | 
| Reference Date: 1st Quarter 2016 |